Yttrium, Lanthanide, Actinide, Or Transactinide Containing (i.e., Atomic Numbers 39 Or 57-71 Or 89+) Patents (Class 501/152)
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Publication number: 20140098455Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectirc composition including dielectric grains having a perovskite structure represented by ABO3, a portion of the dielectric grains having a core-shell structure, wherein dielectric grains having an average length of a core equal to or less than 250 nm and a ratio of the average length of the core to an average length of the dielectric grain below 0.8 may be 50% or more of the portion of dielectric grains having a core-shell structure, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.Type: ApplicationFiled: March 15, 2013Publication date: April 10, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: SUNG HYUNG KANG, DU WON CHOI, MIN SUNG SONG
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Publication number: 20140098457Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO3, wherein the dielectric grain has a core-shell structure in which a content of an additive in a shell is 15% or less, based on an average content of the additive distributed throughout the dielectric grain, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.Type: ApplicationFiled: March 15, 2013Publication date: April 10, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Hyung KANG, Jae Sung PARK, Sang Huk KIM
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Publication number: 20140092525Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO3, wherein, when an imaginary line is drawn in a direction from a center of the dielectric grain to a grain boundary thereof, a content of rare earth elements in a region corresponding to 0.75 to 0.95% of the dielectric grain from the center of the dielectric grain may be 0.5 to 2.5 at %, based on 100 at % of a B-site ion, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.Type: ApplicationFiled: March 15, 2013Publication date: April 3, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Hyung KANG, Doo Young KIM, Chang Hak CHOI
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Publication number: 20140094357Abstract: Provided is a method of manufacturing a transparent sesquioxide sintered body by which a transparent M2O3 type sesquioxide sintered body can be manufactured. A powder including particles of an oxide of at least one rare earth element selected from Y, Sc or lanthanide elements and Zr oxide particles is prepared as a raw material powder, wherein in the particle size distribution of the rare earth element oxide particles, or in the particle size distribution of secondary particles in the case where the rare earth element oxide particles are agglomerated to form the secondary particles, the particle diameter D2.5 value at which the cumulative particle amount from the minimum particle size side is 2.5% based on the total particle amount is in the range from 180 nm to 2000 nm, inclusive. The raw material powder is press molded into a predetermined shape, followed by sintering.Type: ApplicationFiled: October 2, 2013Publication date: April 3, 2014Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Masanori IKARI, Yoshihiro NOJIMA, Shinji MAKIKAWA, Akio IKESUE
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Patent number: 8679998Abstract: Initially, an Yb2O3 raw material was subjected to uniaxial pressure forming at a pressure of 200 kgf/cm2, so that a disc-shaped compact having a diameter of about 35 mm and a thickness of about 10 mm was produced, and was stored into a graphite mold for firing. Subsequently, firing was performed by using a hot-press method at a predetermined firing temperature (1,500° C.), so as to obtain a corrosion-resistant member for semiconductor manufacturing apparatus. The press pressure during firing was specified to be 200 kgf/cm2 and an Ar atmosphere was kept until the firing was finished. The retention time at the firing temperature (maximum temperature) was specified to be 4 hours. In this manner, the corrosion-resistant member for semiconductor manufacturing apparatus made from an Yb2O3 sintered body having an open porosity of 0.2% was obtained.Type: GrantFiled: September 21, 2012Date of Patent: March 25, 2014Assignee: NGK Insulators, Ltd.Inventors: Morimichi Watanabe, Yuji Katsuda, Toru Hayase, Asumi Jindo
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Publication number: 20140066287Abstract: A sintered aluminum nitride substrate having a thermal conductivity of about 60 W/m-K to about 150 W/m-K, a flexural strength of about 200 MPa to about 325 MPa, a volume resistivity of greater than 1010 Ohm cm, a density of at least about 95% of theoretical, optionally at least 97%, and a reflectance factor of at least about 60% substantially over the wavelength range of 360 nm to 820 nm. A low temperature process for sintering aluminum nitride includes providing an AlN sintering formulation of AlN powder and a sintering aid of yttria, calcia, and optionally added alumina, forming the AlN sintering formulation into a green body, and sintering the green body at a temperature of about 1675° C. to 1750° C.Type: ApplicationFiled: March 13, 2013Publication date: March 6, 2014Inventors: Jonathan H. HARRIS, Thomas NEMECEK, Robert TESCH
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Patent number: 8663781Abstract: A display window is formed by mechanically processing a transparent ceramic article. The composition of the ceramic article includes yttrium oxide and thorium oxide, the mole percentage of yttrium oxide is about 85% to about 94.99%, and the mole percentage of thorium oxide is about 4.99% to about 15%. The display window has a high light transmittance, good acid and alkali corrosion resistance, high hardness, long lifetime.Type: GrantFiled: March 27, 2012Date of Patent: March 4, 2014Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) LimitedInventors: Ren-Bo Wang, Xin-Wu Guan, Po-Feng Ho, Wu-Zheng Ou
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Publication number: 20140011662Abstract: Methods for producing substantially single phase yttrium phosphate which exhibits the xenotime crystal structure are disclosed. The methods can be practiced without the use of high temperatures (e.g., the methods can be practiced at temperatures less than 1000° C.). The resulting yttrium phosphate can be in the form of particles which comprise interwoven strands of crystals of yttrium phosphate and/or nanoparticles prepared from such particles.Type: ApplicationFiled: March 18, 2013Publication date: January 9, 2014Applicant: CORNING INCORPORATEDInventors: Sandra Lee Gray, Richard Donald Witham
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Patent number: 8623527Abstract: A ceramic coated article useful in semiconductor processing, which is resistant to erosion by halogen-containing plasmas. The ceramic coated article includes an aluminum substrate coated with a solid solution coating formed from a combination of yttrium oxide and zirconium oxide. The ceramic coating is formed from yttrium oxide at a molar concentration ranging from about 90 mole % to about 70 mole %, and zirconium oxide at a molar concentration ranging from about 10 mole % to about 30 mole %. In a second embodiment, the ceramic article includes ceramic which is formed from zirconium oxide at a molar concentration ranging from about 96 mole % to about 94 mole %, and yttrium oxide at a molar concentration ranging from about 4 mole % to about 6 mole %.Type: GrantFiled: August 31, 2011Date of Patent: January 7, 2014Assignee: Applied Materials, Inc.Inventors: Jennifer Y. Sun, Ren-Guan Duan, Jie Yuan, Li Xu, Kenneth S. Collins
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Patent number: 8617432Abstract: A sintered electroconductive oxide forming a thermistor element has a first crystal phase having a composition represented by RE14Al2O9 and a second crystal phase having a perovskite structure represented by (RE21-aSLa)MO3. The factor a of the second crystal phase is: 0.18<a<0.50, wherein RE1 represents at least one of Yb and Lu and at least one species selected from among group 3A elements excluding Yb, Lu, and La; RE2 represents at least one species selected from among group 3A elements excluding La and which contains at least one species selected from the group RE1; M represents Al and at least one species selected from group 4A to 7A, and 8 elements; and SL represents Sr, Ca, and Mg, with at least Sr being included at a predominant proportion by mole.Type: GrantFiled: February 18, 2010Date of Patent: December 31, 2013Assignee: NGK Spark Plug Co., Ltd.Inventors: Yasuyuki Okimura, Shinji Ban, Hiroshi Watanbe, Takeshi Mitsuoka
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Patent number: 8617433Abstract: A conductive sintered oxide including: a first crystal phase represented by RE14Al2O9 and a second crystal phase having a perovskite structure represented by (RE21-cSLc)(AlxM1y)O3. RE1 is a first element group consisting of Yb and/or Lu and at least one element selected from Group IIIA elements excluding Yb, Lu and La. RE2 is a second element group consisting of at least one element selected from Group IIIA elements excluding La and including at least one of the elements constituting the first element group RE1. SL is an element group consisting of at least one of Sr, Ca and Mg and which includes Sr as a main element, and M1 is an element group consisting of at least one element selected from Groups IVA, VA, VIA, VIIA and VIII excluding Cr. The coefficient c is in the range of 0.18<c<0.50, and the coefficients x and y are in the range of 0.95?x+y?1.1.Type: GrantFiled: August 16, 2011Date of Patent: December 31, 2013Assignee: NGK Spark Plug Co., Ltd.Inventors: Hiroshi Watanabe, Yasayuki Okimura, Shinji Ban, Takeshi Mitsuoka
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Patent number: 8614001Abstract: A sintered particle has the following chemical analysis, as percentages by weight: ZrO2 partially stabilized with CeO2 and Y2O3: complement to 100%; Al2 10%-60%; additive selected from CaO, a manganese oxide, La2O3, SrO, BaO, and mixtures thereof: 0.2%-6; the quantity of CaO being less than 2%; impurities: <2%; the zirconia being stabilized with CeO2 and Y2O3 present in quantities such that, as molar percentages based on the sum of ZrO2, CeO2 and Y2O3: CeO2: 6 mol %-11 mol %; and Y2O3: 0.5 mol %-2 mol %; the particle being obtained by sintering at a sintering temperature higher than 1300° C., the sintering temperature being higher than 1400° C. if the additive is CaO or if the molar CeO2 content is in the range 10% to 11%.Type: GrantFiled: June 1, 2010Date of Patent: December 24, 2013Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeenInventors: Emmanuel P. M. Nonnet, Yves M. L. Boussant Roux
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Publication number: 20130337993Abstract: Disclosed is a method for preparing polycrystalline aluminum oxynitride having enhanced transparency, and preparing polycrystalline aluminum oxynitride by sintering a powder mixture of Al2O3 and AlN under atmospheric pressure, wherein the content of AlN is set to 17 to 26 mol %, a first sintering is performed at 1,575° C. to 1,675° C. so as to enable raw-material powders to have a relative density of 95% or higher, and a second sintering is performed so as to enable the raw-material powders to have a higher relative density.Type: ApplicationFiled: February 28, 2012Publication date: December 19, 2013Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION YEUNGNAM UNIVERSITYInventors: Jae Hyung Lee, Ji Hye Kim, Bo Hoon Han, In Chul Jung
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Patent number: 8609565Abstract: The present invention provides a proton conducting thin film having a dense nanometric ceramic material with a relative density of at least about 90% and a grain size of less than about 30 nm, wherein the proton conducting thin film is capable of operating at temperatures of less than about 100° C. in the presence of water vapor. The present invention also provides an electrochemical device using the proton conducting thin film, and a method of making the proton conducting thin film.Type: GrantFiled: March 20, 2008Date of Patent: December 17, 2013Assignee: The Regents of the University of CaliforniaInventors: Zuhair A. Munir, Sangtae Kim, Umberto Anselmi-Tamburini, Manfred Martin
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Patent number: 8593819Abstract: Circuit modules and methods of construction thereof that contain composite meta-material dielectric bodies that have high effective values of real permittivity but which minimize reflective losses, through the use of host dielectric (organic or ceramic), materials having relative permittivities substantially less than ceramic dielectric inclusions embedded therein. The composite meta-material bodies permit reductions in physical lengths of electrically conducting elements such as antenna element(s) without adversely impacting radiation efficiency. The meta-material structure may additionally provide frequency band filtering functions that would normally be provided by other components typically found in an RF front-end.Type: GrantFiled: May 14, 2012Date of Patent: November 26, 2013Inventor: L. Pierre de Rochemont
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Publication number: 20130298650Abstract: A moisture-sensitive ceramic material having a composition represented by the general formula RE(A,B)O3, wherein RE is a rare earth element, A is a divalent metal element, and B is a tetravalent metal element. More specifically, the moisture-sensitive ceramic material has a composition represented by the general formula RE(A1-xBx)O3, and A is Ni or Mg, and B is Ti or Sn.Type: ApplicationFiled: July 17, 2013Publication date: November 14, 2013Inventor: Tadamasa Miura
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Publication number: 20130251942Abstract: This invention relates generally to an article that includes a base substrate and a hydrophobic coating on the base substrate, wherein the hydrophobic coating includes a rare earth element material (e.g., a rare earth oxide, a rare earth carbide, a rare earth nitride, a rare earth fluoride, and/or a rare earth boride). An exposed surface of the hydrophobic coating has a dynamic contact angle with water of at least about 90 degrees. A method of manufacturing the article includes providing the base substrate and forming a coating on the base substrate (e.g., through sintering or sputtering).Type: ApplicationFiled: March 23, 2012Publication date: September 26, 2013Inventors: Gisele Azimi, Kripa K. Varanasi, Rajeev Dhiman, Adam T. Paxson, Kyukmin Kwon
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Publication number: 20130231239Abstract: Coloring in a slip casting process by which a ceramic slurry is cast into green state bodies. It is during this slip casting that a coloring solution consisting of metallic salts is introduced to the slurry and subsequently slip-cast. A coloring solution may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. The solution is thoroughly mixed with the ceramic slurry, after which the ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia dental restorations.Type: ApplicationFiled: March 1, 2012Publication date: September 5, 2013Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Publication number: 20130225392Abstract: A cordierite ceramic contains a main component having a composition including Mg of 12.6% by mass or more and 14.0% by mass or less in terms of an oxide, Al of 33.4% by mass or more and 34.4% by mass or less in terms of an oxide and Si of 52.0% by mass or more and 53.6% by mass or less in terms of an oxide, an accessory component having any one of Y, Yb, Er, and Ce in an amount of 4.5% by mass or more and 15.0% by mass or less in terms of an oxide based on 100% by mass of the main component, wherein cordierite, disilicate and spinel are present as crystal phases, a coefficient of thermal expansion of ?120 ppb/° C. to +120 ppb/° C., a four-point bending strength of 170 MPa or more, a low thermal expansion performance and an excellent mechanical strength.Type: ApplicationFiled: October 26, 2011Publication date: August 29, 2013Applicant: KYOCERA CORPORATIONInventors: Shuichi Iida, Akeo Fukui, Toshiyuki Sue
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Patent number: 8500898Abstract: An yttria-based slurry composition comprising yttria, an aqueous silica binder system or an aqueous ammonium zirconium carbonate binder system and a fluorine compound, which is selected from ammonium fluoride, ammonium hydrogen difluoride, sodium fluoride, potassium fluoride, sodium hydrogen difluoride and/or potassium hydrogen difluoride and a method of stabilizing an yttria-based slurry composition comprising yttria and an aqueous silica binder system or an aqueous ammonium zirconium carbonate binder system which method comprises treating the composition, preferably treating the binder system, with a fluorine compound which is selected as indicated above.Type: GrantFiled: June 11, 2010Date of Patent: August 6, 2013Assignee: Treibacher Industrie AGInventors: Sigrun Raunig, Peter Janz
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Publication number: 20130184141Abstract: To obtain a ceramic fiber-reinforced composite material, by melt-infiltrating a composite material substrate obtained by forming ceramic fibers into a composite with a matrix formed of an inorganic substance, with an alloy having a composition that is constituted by a disilicate of at least one or more transition metal among transition metals that belong to Group 3A, Group 4A or Group 5A of the Periodic Table and silicon as the remainder, and having the silicon content ratio of 66.7 at % or more.Type: ApplicationFiled: January 16, 2013Publication date: July 18, 2013Applicant: JAPAN AEROSPACE EXPLORATION AGENCYInventor: JAPAN AEROSPACE EXPLORATION AGENCY
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Patent number: 8470724Abstract: Upon producing a transparent polycrystalline material, a suspension liquid (or slurry 1) is prepared, the suspension liquid being made by dispersing a raw-material powder in a solution, the raw-material powder including optically anisotropic single-crystalline particles to which a rare-earth element is added. A formed body is obtained from the suspension liquid by means of carrying out slip casting in a space with a magnetic field applied. On this occasion, while doing a temperature control so that the single-crystalline particles demonstrate predetermined magnetic anisotropy, one of static magnetic fields and rotary magnetic fields is selected in compliance with a direction of an axis of easy magnetization in the single-crystalline particles, and is then applied to them. A transparent polycrystalline material is obtained by sintering the formed body, the transparent polycrystalline material having a polycrystalline structure whose crystal orientation is controlled.Type: GrantFiled: December 25, 2009Date of Patent: June 25, 2013Assignees: Inter-University Research Institute Corporation, National Institutes of Natural Sciences, Genesis Research Institute, IncorporatedInventors: Takunori Taira, Jun Akiyama, Shigeo Asai, Kunihiko Hara
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Patent number: 8460578Abstract: A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)2O2S, wherein M is a rare earth element, and Ln is at least one element selected from the group consisting of Eu, Ce, Pr, Tb, Yb, Dy, Sm, and Ho, and 1×10?6<X<2×10?1. The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature Tht. The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature Thip, where 1100° C.<Thip<1500° C., to thereby form a densified body.Type: GrantFiled: April 6, 2009Date of Patent: June 11, 2013Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Brian C. LaCourse, Morteza Zandi
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Publication number: 20130122266Abstract: Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element and a second substitutable element, one or more rare earth ions substituted for the first substitutable element, and chromium substituted for the second substitutable element. The one or more rare earth ions are selected from a group consisting of neodymium and ytterbium. The material also may include a medium within which particles of the borate are incorporated. The medium, with the luminescent material particles, may form a security feature of an article. Embodiments of methods for identifying whether such a luminescent material is incorporated with an article include exposing a portion of the article to excitation in a chromium absorption band, and determining whether a detected emission produced by the article as a result of the excitation indicates an ytterbium emission after termination of the exposing step.Type: ApplicationFiled: November 8, 2012Publication date: May 16, 2013Applicant: HONEYWELL INTERNATIONAL INC.Inventor: Honeywell International Inc.
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Patent number: 8440479Abstract: A method for sealing an organic light emitting diode (OLED) device is disclosed wherein the OLED device comprises a color filter. A color filter is deposited on a first glass plate or substrate and a glass-based frit is then deposited in a loop around the color filter, The deposited fit loop is then heated by electromagnetic energy to evaporate organic constituents and to sinter the fit in a pre-sintering step. An OLED device may then be assembled by positioning a second glass plate comprising an organic light emitting material deposited thereon in overlying registration with the first glass plate, with the color filer and the organic light emitting material positioned between the plates. The fit is then heated with a laser to form a hermetic seal between the first and second glass plates.Type: GrantFiled: March 30, 2010Date of Patent: May 14, 2013Assignee: Corning IncorporatedInventors: Kelvin Nguyen, Butchi R. Vaddi, Lu Zhang
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Patent number: 8426330Abstract: The invention provides a boron suboxide composite material comprising boron suboxide and a secondary phase, wherein the secondary phase contains a rare earth metal oxide. The rare earth metal oxide may be selected from the oxides of scandium, yttrium, which is preferred, and elements of the lanthanide series, and may be a mixture of rare earth metal oxides. The secondary phase may also include, in addition to the rare earth metal oxide(s), a further oxide or mixture of oxides of an element of the Groups IA, MA, MIA, and IVA of the periodic table. Moreover, the secondary phase may also contain a boride, and particularly a boride selected from the borides of transition metals of the fourth to eighth groups of the periodic table.Type: GrantFiled: April 24, 2008Date of Patent: April 23, 2013Inventors: Anthony Andrews, Iakovos Sigalas, Mathias Herrmann
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Publication number: 20130083450Abstract: There is provided a dielectric composition including: a base powder; a first accessory component including a content (x) of 0.1 to 1.0 at % of an oxide or a carbonate including transition metals, based on 100 moles of the base powder; a second accessory component including a content (y) of 0.01 to 5.0 at % of an oxide or a carbonate including a fixed valence acceptor element, based on 100 moles of the base powder; a third accessory component including an oxide or a carbonate including a donor element; and a fourth accessory component including a sintering aid.Type: ApplicationFiled: February 13, 2012Publication date: April 4, 2013Inventors: Seok Hyun YOON, Sun Ho YOON, Chang Hoon KIM, Sang Hoon KWON
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Publication number: 20130072373Abstract: The invention relates to an alumina-based opaque ceramic, similar to ruby and having a high toughness. This ceramic comprises, by weight: 0.4% to 5% of at least from one oxide of a metal chosen from chromium, cobalt, nickel, manganese, vanadium, titanium and iron; 0.00080 to 0.5% of magnesium oxide; and 0.05 to 6% of at least one oxide of an element of the group of rare earths. The ceramic is applicable in particular in jewellery, fine jewellery and watch making. The invention also relates to methods of preparing such a ceramic.Type: ApplicationFiled: April 1, 2011Publication date: March 21, 2013Applicant: ROLEX S.A.Inventors: Ollivier Pujol, Isabelle Rigot
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Patent number: 8394484Abstract: This invention relates to thermally sprayed coatings of a high purity yttria or ytterbia stabilized zirconia powder, said high purity yttria or ytterbia stabilized zirconia powder comprising from about 0 to about 0.15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). Thermal barrier coatings for protecting a component such as blades, vanes and seal surfaces of gas turbine engines, made from the high purity yttria or ytterbia stabilized zirconia powders, have a density greater than 88% of the theoretical density with a plurality of vertical macrocracks homogeneously dispersed throughout the coating to improve its thermal fatigue resistance.Type: GrantFiled: April 27, 2007Date of Patent: March 12, 2013Assignee: Praxair Technology, Inc.Inventors: Thomas Alan Taylor, Danny Lee Appleby, Albert Feuerstein, Ann Bolcavage, Neil Hitchman
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Patent number: 8389101Abstract: Lanthanum containing cordierite bodies are provided that exhibit high strength, little or no microcracking, and a high thermal shock resistance. Improved maintenance of low microcracking and high strength is obtained even after exposure to high temperatures.Type: GrantFiled: May 24, 2010Date of Patent: March 5, 2013Assignee: Corning IncorporatedInventor: Gregory Albert Merkel
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Patent number: 8383537Abstract: Refractory materials are provided which contain P2O5/R2O3 constituents, where R is Y, Sc, Er, Lu, Yb, Tm, Ho, Dy, Tb, Gd, or a combination thereof, and/or V2O5/R?2O3 constituents where R? is Y, Sc, one or more rare earth elements, or a combination thereof. In certain embodiments, the refractory materials are xenotime-type materials and/or xenotime-stabilized zircon-type materials. The refractory materials can be used in the manufacture of glass and glass-ceramics. For example, the refractory materials, especially those that contain P2O5/R2O3 constituents, can be used as forming structures (“isopipes”) in the fusion process for making flat sheets of glass such as the glass sheets used as substrates in the manufacture of flat panel displays.Type: GrantFiled: October 18, 2011Date of Patent: February 26, 2013Assignee: Corning IncorporatedInventors: Hilary Tony Godard, Cameron Wayne Tanner, Michelle M Wallen, Elizabeth Margaret Wheeler
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Publication number: 20130045359Abstract: A display window is formed by mechanically processing a transparent ceramic article. The composition of the ceramic article includes yttrium oxide and thorium oxide, the mole percentage of yttrium oxide is about 85% to about 94.99%, and the mole percentage of thorium oxide is about 4.99% to about 15%. The display window has a high light transmittance, good acid and alkali corrosion resistance, high hardness, long lifetime.Type: ApplicationFiled: March 27, 2012Publication date: February 21, 2013Applicants: FIH (HONG KONG) LIMITED, SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD.Inventors: REN-BO WANG, XIN-WU GUAN, PO-FENG HO, WU-ZHENG OU
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Patent number: 8372769Abstract: Method for producing a mold for use in casting reactive metals comprising preparing a slurry of a yttria-based refractory composition and a binder, and using said slurry as a mold facecoat by applying said slurry onto a surface of a mold pattern, wherein said yttria-based refractory composition is obtainable by (a) mixing particles of a yttria-based ceramic material and a fluorine containing dopant, and (b) heating the resulting mixture to effect fluorine-doping of said yttria-based ceramic material.Type: GrantFiled: May 24, 2011Date of Patent: February 12, 2013Assignee: Treibacher Industrie AGInventors: Peter Janz, Sigrun Tauber
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Patent number: 8367227Abstract: Specialty ceramic materials which resist corrosion/erosion under semiconductor processing conditions which employ a corrosive/erosive plasma. The corrosive plasma may be a halogen-containing plasma. The specialty ceramic materials have been modified to provide a controlled electrical resistivity which suppresses plasma arcing potential.Type: GrantFiled: August 2, 2007Date of Patent: February 5, 2013Assignee: Applied Materials, Inc.Inventors: Jennifer Y. Sun, Kenneth S. Collins, Ren-Guan Duan, Senh Thach, Thomas Graves, Xiaoming He, Jie Yuan
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Patent number: 8362869Abstract: A thermistor based on a composition having the general formula (I): Re2-x-yCraMnbMcEyOz wherein Re is a rare earth metal or a mixture of two or more rare earth metals, M is a metal selected from the group consisting of nickel, cobalt, copper, magnesium and mixtures thereof, E is a metal selected from the group consisting of calcium, strontium, barium and mixtures thereof, x is the sum of a+b+c and is a number between 0.1 and 1, and the relative ratio of the molar fractions a, b and c is in an area bounded by points A, B, C and D in a ternary diagram, wherein point A is, if y<0.006, at (Cr=0.00, Mn=0.93+10?y, M=0.07?10?y), and, if y?0.006, at (Cr=0?00, Mn=0.99, M=0.01), point B is, if y<0.006, at (Cr=0.83, Mn=0.10+10?y, M=0.07?10?y), and, if y?0.006, at (Cr=0.83, Mn=0.16, M=0.01), point C is at (Cr=0.50, Mn=0.10, M=0.40) and point D is at (Cr=0.00, Mn=0.51, M=0.49), y is a number between 0 and 0.5?x, and z is a number between 2.5 and 3.5.Type: GrantFiled: December 19, 2008Date of Patent: January 29, 2013Assignee: Vishay Resistors Belgium BVBAInventors: Véronique Poulain, Sophie Schuurman, André Lannoo, Frans F. Westendorp
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Publication number: 20130022838Abstract: Specialty ceramic materials which resist corrosion/erosion under semiconductor processing conditions which employ a corrosive/erosive plasma. The corrosive plasma may be a halogen-containing plasma. The specialty ceramic materials have been modified to provide a controlled electrical resistivity which suppresses plasma arcing potential.Type: ApplicationFiled: September 10, 2012Publication date: January 24, 2013Inventors: Jennifer Y. Sun, Kenneth S. Collins, Ren-Guan Duan, Senh Thach, Thomas Graves, Xiaoming He, Jie Yuan
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Patent number: 8357313Abstract: The invention relates to a new class of luminescent substances (phosphorous) based on an universally dopable matrix made of an amorphous, at the most partially crystalline network of the elements P, Si, B, Al and N, preferably the composition Si3B3N7. Optical excitation and emission can be varied in this system over the entire practically relevant field by incorporation of any cationic activators, alone or in combination, but also by incorporation of oxygen as anionic component. This opens up the entire spectrum of use of luminescent substances, such as illumination systems or electronic screens.Type: GrantFiled: October 31, 2007Date of Patent: January 22, 2013Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Martin Jansen, Hasan Cakmak
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Publication number: 20130011610Abstract: A body made of a ceramic material stabilized by a stabilizing agent, characterized in that the body comprises a surface region extending from the surface of the body to a predetermined depth, the stabilizing agent being enriched in said surface region.Type: ApplicationFiled: March 11, 2011Publication date: January 10, 2013Inventor: Marc Stephan
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Passive optoceramics with cubic crystal structure, process for manufacturing the same and their uses
Patent number: 8343884Abstract: The optoceramics are transparent to visible light and/or infrared radiation. The optoceramics each consist of a crystal matrix, i.e. of polycrystalline material, wherein at least 95% by weight, preferably at least 98% by weight, of the single crystallites have a cubic pyrochlore or a fluorite structure. Refractive, transmissive or diffractive optical elements made with the optoceramics, their uses and an optical imaging system comprising at least one of the optical elements are also disclosed. Methods of manufacturing the optoceramics are described.Type: GrantFiled: March 22, 2010Date of Patent: January 1, 2013Assignee: Schott AGInventors: Yvonne Menke, Ulrich Peuchert, Akio Ikesue -
Publication number: 20120324954Abstract: A reactive-ceramming process for making YPO4 ceramics involving the reaction between a YP-glass and a Y-source material. The invention can be used to synthesize, inter alia, phase-pure YPO4 ceramic material 5 at a relatively low temperature in a relatively short period of time and at a low cost. Invention can be used to make large piece of YPO4 blocks suitable for, e.g., an isopipe in a fusion down-draw process for making large-size glass sheets.Type: ApplicationFiled: February 25, 2011Publication date: December 27, 2012Inventors: Lisa Ann Lamberson, Robert Michael Morena
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Patent number: 8338322Abstract: A method for forming a transparent ceramic preform in one embodiment includes forming a suspension of oxide particles in a solvent, wherein the suspension includes a dispersant, with the proviso that the suspension does not include a gelling agent; and uniformly curing the suspension for forming a preform of gelled suspension. A method according to another embodiment includes creating a mixture of inorganic particles, a solvent and a dispersant, the inorganic particles having a mean diameter of less than about 2000 nm; agitating the mixture; adding the mixture to a mold; and curing the mixture in the mold for gelling the mixture, with the proviso that no gelling agent is added to the mixture.Type: GrantFiled: August 30, 2011Date of Patent: December 25, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Joel P. Hollingsworth, Joshua D. Kuntz, Zachary M. Seeley, Thomas F. Soules
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Patent number: 8338003Abstract: An optical element comprising a vacuum-sintered body comprising a plurality of particles each having a two-layer structure comprising a ceramic particle and a coating layer, wherein the ceramic particle comprises LnxAlyO[x+y]×1.5, where Ln represents a rare-earth element, x represents 1?x?10, and y represents 1?y?5, and has an average particle diameter of 1 ?m or more and 10 ?m or less, and wherein the coating layer comprises a ceramic having a lower sintering temperature than a sintering temperature of the ceramic particle.Type: GrantFiled: March 31, 2011Date of Patent: December 25, 2012Assignee: Canon Kabushiki KaishaInventors: Kohei Nakata, Michio Endo, Kentaro Doguchi, Shigeru Fujino
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Patent number: 8337724Abstract: A method of preparing a composite includes the following steps. A powder blend is sintering while an oxygen partial pressure (pO2) of a gaseous atmosphere surrounding the powder blend is controlled. Before the sintering, a shape is formed from the powder blend. After the forming and before the sintering, binder is removed from the powder blend. The powder blend comprises binder, a mixed electronic/oxygen O2? anionic conducting compound (C1) and a compound (C2) chosen from MgO and BaTiO3. The resultant composite comprises at least 75 vol % of compound (C1), from 0.01 to 25 vol % of compound (C2), and from 0 vol % to 2.5 vol % of compound (C3).Type: GrantFiled: June 2, 2011Date of Patent: December 25, 2012Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Pascal Del-Gallo, Thierry Chartier, Gregory Etchegoyen
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Publication number: 20120321851Abstract: A wear resistant member formed of ceramic sintered body mainly composed of silicon nitride, the ceramic sintered body containing 10 to 3500 ppm of an Fe component in terms of Fe element, more than 1000 ppm to 2000 ppm of a Ca component in terms of Ca element, and 1 to 2000 ppm of a Mg component in terms of Mg element, wherein a ?-phase ratio of silicon nitride crystal grains is 95% or more, a maximum longer diameter of the silicon nitride crystal grains is 40 ?m or less, Ca component existing in grain boundary phase is not detected by XRD (X-ray Diffraction method), and each of dispersions in Vickers hardness, fracture toughness and density of the wear resistant member is within a range of ±10%. According to this structure, there can be obtained a wear resistant member comprising a ceramic sintered body improved in grinding-work property in addition to an excellent wear resistant property.Type: ApplicationFiled: February 10, 2011Publication date: December 20, 2012Applicants: TOSHIBA MATERIALS CO., LTD., KABUSHIKI KAISHA TOSHIBAInventor: Minoru Takao
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Publication number: 20120318132Abstract: According to the present invention, a ceramic composite material may be formed by a method comprising the steps preparing a solid solution comprising aluminium oxide, a second component comprising a cation in a first valent state, and a dopant, wherein the dopant is present in an amount of not more than 1000 ppm by weight of the solid solution; and carrying out a treatment on the solid solution to form the ceramic composite material, wherein the treatment changes the valent state of said cation to a second valent state, forming a ceramic composite material comprising grains containing aluminium oxide and a precipitate of particles comprising the cation in the second valent state. The materials may be useful in the manufacture of various products, including wear resistant products and armour.Type: ApplicationFiled: November 17, 2010Publication date: December 20, 2012Applicant: ISIS INNOVATION LIMITEDInventors: Richard Ian Todd, Amartya Mukhopadhyay
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Patent number: 8329605Abstract: The invention relates to a sintered product containing: in mass percent based on oxides, more than 99.5% of a material having a cubic crystallographic structure for more than 95% of the mass thereof, known as a material with a cubic structure, and having a refractive index of less than 2.75 in the wavelength range between 0.2 ?m and 5 ?m; and more than 50 ppma of dopants which must contain titanium oxide TiO2 and at least one additional dopant selected from ZrO2, CaO, and MgO, in which said at least one additional dopant is different from the oxide(s) forming the material with a cubic structure, but can be MgO when the material with a cubic structure is spinel MgAl2O4.Type: GrantFiled: June 13, 2008Date of Patent: December 11, 2012Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeenInventors: Guillaume Bernard-Granger, Nassira Benameur
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Patent number: 8329090Abstract: According to one embodiment, a method for forming a composite transparent ceramic preform includes forming a first suspension of oxide particles in a first solvent which includes a first dispersant but does not include a gelling agent, adding the first suspension to a first mold of a desired shape, and uniformly curing the first suspension in the first mold until stable. The method also includes forming a second suspension of oxide particles in a second solvent which includes a second dispersant but does not include a gelling agent, adding the second suspension to the stable first suspension in a second mold of a desired shape encompassing the first suspension and the second suspension, and uniformly curing the second suspension in the second mold until stable. Other methods for forming a composite transparent ceramic preform are also described according to several other embodiments. Structures are also disclosed.Type: GrantFiled: October 21, 2009Date of Patent: December 11, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Joel P. Hollingsworth, Joshua D. Kuntz, Thomas F. Soules, Richard L. Landingham
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Patent number: 8329303Abstract: A method is described herein for controlling the oxygen level within an oven while sintering a frit to a glass plate where the sintered frit and glass plate are subsequently sealed to another glass plate to form a sealed glass package. Examples of the sealed glass package include a light-emitting device (e.g., organic light emitting diode (OLED) device), a photovoltaic device, a food container, and a medicine container.Type: GrantFiled: February 28, 2012Date of Patent: December 11, 2012Assignee: Corning IncorporatedInventors: Andrew Douglas Banks, Heather Debra Boek, Jason Arthur Howles
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Publication number: 20120309609Abstract: The present disclosure relates to a composite material comprising a ceramic component having a negative coefficient of thermal expansion, and oxidic ceramic particles, to its obtainment process and to its uses in microelectronics, precision optics, aeronautics and aerospace.Type: ApplicationFiled: December 20, 2010Publication date: December 6, 2012Inventors: Ramon Torrecillas San Millan, Olga Garcia Moreno, Adolfo Fernandez Valdes
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Patent number: 8318327Abstract: Components of semiconductor processing apparatus are formed at least partially of erosion, corrosion and/or corrosion-erosion resistant ceramic materials. Exemplary ceramic materials can include at least one oxide, nitride, boride, carbide and/or fluoride of hafnium, strontium, lanthanum oxide and/or dysprosium. The ceramic materials can be applied as coatings over substrates to form composite components, or formed into monolithic bodies. The coatings ca protect substrates from physical and/or chemical attack. The ceramic materials can be used to form plasma exposed components of semiconductor processing apparatus to provide extended service lives.Type: GrantFiled: January 7, 2009Date of Patent: November 27, 2012Assignee: Lam Research CorporationInventor: Robert J. O'Donnell