Including Vitrification Or Firing Patents (Class 264/43)
  • Patent number: 9914665
    Abstract: A method for producing granulates, particularly for use as thermal insulation for a metal melt may include mixing a powdery mineral with a binder, and the mixture may be granulated in order to produce a semi-finished product. The granulate mixture or the semi-finished product may be heated rapidly to a temperature above the melting temperature or decomposition temperature of the binder, which may be in the form of a salt, so that the binder decomposes, whereby gas is released and the volume increases. The apparent density of the granulate mixture may decrease, and therefore the apparent density of the finished product may decrease with respect to the semi-finished product.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 13, 2018
    Assignee: S & B Industrial Minerals GmbH
    Inventor: Wolfgang Ruckert
  • Patent number: 9833775
    Abstract: In a method of manufacturing open-cell bodies, individual parts of an open pore plastic in a size which corresponds to the size of the bodies to be manufactured while taking account of the shrinkage on a sintering or an open pore plastic element having predetermined break points which take account of the size and geometrical design of bodies to be manufactured are/is in filtrated and coated with a suspension in which at least one powdery material is contained. Organic components are expelled after a first heat treatment. Subsequently, a sintering is carried out. Parts of porous plastic provided with the suspension are separated before the first heat treatment or wherein, afterwards the open-cell element which is obtained from the plastic element from the material with which the bodies are formed is cut by forces and thereby separated bodies can be obtained.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: December 5, 2017
    Assignee: GLATT GMBH
    Inventors: Ulf Waag, Norman Reger, Peter Reinhardt
  • Patent number: 9650301
    Abstract: The present disclosure relates to a method for synthesis of a porous solid oxide matrix. The method includes synthesizing a composite by co-precipitating a porous ceramic material with a sacrificial material. The composite is sintered and the sacrificial material of the sintered composite is reduced. A porous solid oxide matrix is formed from the reduced and sintered composite. Porosity of the solid oxide matrix is controlled by a volume fraction of the sacrificial material or sintering temperature and a volume fraction of the sacrificial material. Pore size of the solid oxide matrix is controlled by sintering temperature and a volume fraction of the sacrificial material.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: May 16, 2017
    Assignee: University of South Carolina
    Inventors: Kevin Huang, Lingling Zhang
  • Patent number: 9504944
    Abstract: A filter which is particularly suitable for filtration of molten metal, and method of making the filter, is described. The filter comprises a ceramic core comprising a primary component selected from the group consisting of alumina and magnesium oxide. A coating is on the ceramic core wherein the coating is selected from the group consisting of BN and Y2O3.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: November 29, 2016
    Assignee: Porvair Plc
    Inventors: Leonard S. Aubrey, Feng Chi, Lucas Damoah
  • Patent number: 9388086
    Abstract: In accordance with the present embodiment, a method for making an optical ceramic comprises depositing a plurality of thin layers of powder. The powder comprises a first optical material powder having a first dopant level, and a second optical material powder. The first and second optical material powders are deposited for each layer based on the first dopant level and according to data associated with a three-dimensional (3D) compositional profile design of an optical ceramic. The method further comprises binding the first and second optical material powders of each thin layer to each other and each thin layer with an adjacent layer such that a green state optical ceramic is produced based on the 3D compositional profile design. The method further comprises densifying the green state optical ceramic to obtain the optical ceramic.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 12, 2016
    Assignee: RAYTHEON COMPANY
    Inventors: Jiyun C. Imholt, Richard L. Gentilman, Thomas M. Hartnett
  • Patent number: 9284207
    Abstract: The present invention provides a method of manufacturing a vitreous silica crucible having a transparent layer by use of waste vitreous silica, and silica powder suitable for the manufacturing. According to the present invention, there is provided a method of manufacturing granulated silica powder comprising a process for pulverizing waste vitreous silica generated in the manufacturing process of a crucible to form silica fine powder having an average particle diameter of 100 ?m or less, and a process for granulating the silica fine powder to obtain granulated silica powder having an average particle diameter of 50 ?m or more under helium atmosphere.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: March 15, 2016
    Assignee: SUMCO CORPORATION
    Inventors: Toshiaki Sudo, Takuma Yoshioka, Koichi Suzuki, Shinsuke Yamazaki
  • Patent number: 9175167
    Abstract: A process for producing a porous ceramic body comprises a) mixing a coated porogen with a silicate or a oxide ceramic precursor, wherein the porogen is decomposable to gaseous decomposition products and optionally solid products upon heating, and is coated with a coating agent; b) forming a green body from the mixture obtained in step (a); and c) firing the green body obtained in step (b) to obtain the ceramic body, whereby the porogen decomposes to form pores within the ceramic body and the coating agent is deposited at the inner surface of the pores. The porogen is coated with a coating agent which, upon firing, is deposited at the inner surface of the ceramic pores, so that porous ceramics having decreased weight and improved porosity are obtained, while maintaining at the same time good mechanical strength. A green body and a porous ceramic body obtainable with the above-mentioned process are described too.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: November 3, 2015
    Assignee: IMERYS CERAMICS FRANCE
    Inventor: Axel Mueller-Zell
  • Patent number: 9097154
    Abstract: A method for producing a ceramic honeycomb filter having predetermined plugs comprising immersing the end portions of a ceramic honeycomb structure having large numbers of flow paths, with its end surface covered with a mask provided with holes only at positions corresponding to the predetermined flow paths, in a plugging material slurry, so that the plugging material slurry is introduced into the end portions of the predetermined flow paths, and removing plugging material protrusions formed in the flow paths that should not be plugged.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: August 4, 2015
    Assignee: HITACHI METALS, LTD.
    Inventors: Toyohide Kumagae, Shinya Tokumaru, Hirohisa Suwabe
  • Publication number: 20150143786
    Abstract: Disclosed are ceramic bodies comprised of a tialite phase and at least one silicate phase with a rare earth oxide and zirconium additions and methods for the manufacture of the same.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 28, 2015
    Inventors: Gregory Albert Merkel, Patrick David Tepesch, Elizabeth Marie Vileno
  • Publication number: 20150147677
    Abstract: Methods and compositions for a low temperature operating solid oxide fuel cell (SOFC) are provided. The SOFC includes a Sr0.8La0.2TiO3 (SLT) support layer, a (La0.9Sr0.1)0.98(Ga0.8Mg0.2)O3-? (LSGM) electrolyte layer and?a cathode layer disposed on top of said electrolyte layer.
    Type: Application
    Filed: November 28, 2014
    Publication date: May 28, 2015
    Inventors: Scott A. Barnett, Zhan Gao, Elizabeth C. Miller
  • Publication number: 20150147561
    Abstract: A ceramic porous body has an alumina porous body made up by binding aggregate alumina particles to each other, the aggregate alumina particles being bound to each other by a compound including gadolinium silicate, lanthanum silicate or yttrium silicate synthesized from a silicate mineral and at least one rare-earth oxide selected from Gd2O3, La2O3, and Y2O3, and an inorganic porous film formed on the alumina porous body.
    Type: Application
    Filed: May 17, 2013
    Publication date: May 28, 2015
    Applicant: NORITAKE CO., LIMITED
    Inventors: Hirokazu Watanabe, N. Nair Balagopal
  • Publication number: 20150102516
    Abstract: Disclosed herein are green bodies comprising at least one ceramic-forming powder; at least one binder; and at least one cross-linked starch present in an amount of at least about 20% by weight as a super addition. Further disclosed herein is a method of making a porous ceramic body comprising mixing at least one ceramic-forming powder, at least one solvent such as water, at least one binder, and at least one cross-linked starch present in an amount of about 20% by weight as a super addition to form a batch composition; extruding the batch composition to form a green body; drying the green body; and firing the green body to form a porous ceramic body. Also disclosed herein are methods of screening a green body for making a porous ceramic body.
    Type: Application
    Filed: September 12, 2014
    Publication date: April 16, 2015
    Inventors: Mark Alan Lewis, Pascale Oram, Cameron Wayne Tanner, Elizabeth Marie Vileno
  • Patent number: 8992808
    Abstract: The present invention relates to a method of manufacturing a porous pre-sintered granule for a sintered reaction-bonded silicon nitride, to which a pressure forming technology can be applied to obtain a porous sintered reaction-bonded silicon nitride having high porosity and having a structure in which macropores and micropores coexist with each other, and to a porous pre-sintered granule manufactured by the method. The method includes the steps of: granulating a raw material comprising silicon and sintering additives including yttrium, aluminum and at least one alkali earth metal compound; and pre-sintering the granulated raw material at a temperature of 1300˜1375° C. under an inert atmosphere. According to the present invention, a porous pre-sintered granule for porous sintered reaction-bonded silicon nitride, which can increase the air permeability and trapping efficiency by controlling the size of a pore channel such that macropores and micropores coexist, can be manufactured.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: March 31, 2015
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Young Jo Park, Wook Kyung Jang, In Hyuck Song
  • Patent number: 8961840
    Abstract: Methods, processes, and systems for producing bulk ceramics from agglomerations of partially cured gelatinous polymer ceramic precursor resin droplets, without using sponge materials to form gas pathways in the polymer bodies. Ceramics can be formed in hours. Resin droplets can be produced with a sprayer where liquid polymer precursors, mixed with a curing agent, are sprayed forming droplets which are partially cured, collected, and compressed into shapes. Ceramic porosity can be varied, droplet particle sizes can be controlled by adjusting liquid and gas pressure, orifice size, during spraying. Partially cured droplets can be formed via an emulsion process and size controlled by emulsion liquid and surfactant selection parameters.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: February 24, 2015
    Assignee: Dynamic Material Systems, LLC
    Inventors: Arnold Hill, William Easter
  • Patent number: 8940203
    Abstract: The present invention provides a method for preparing a composition comprising porous ceramic, comprising the following steps: (a) synthesizing poly(N-isopropylacrylamide-co-methacrylic acid) (p(NIPAAM-MAA)) or similar thermo-response compound thereof; (b) mixing a dispersant with hydroxyapatite or calcium phosphate salt; (c) mixing the p(NIPAAM-MAA) of the step (a) or similar thermo-response compound thereof with water to obtain a hydrogel solution; (d) mixing the hydrogel solution of the step (c) and product of the step (b) to produce a mixture; (e) adding macromolecular particles to the mixture of the step (d) and stirring to produce a slurry; (f) filling the slurry of the step (e) into a template slot; and disposing the template slot filling with the slurry of the step (f) on a crucible, then proceeding high temperature sinter in a furnace to form the composition comprising porous ceramic.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: January 27, 2015
    Assignee: Kaohsiung Medical University
    Inventors: Chih-Kuang Wang, Mei-Ling Ho, Yin-Chih Fu, Gwo-Jaw Wang, Je-Ken Chang
  • Patent number: 8936850
    Abstract: Foam glass may include natural glass, wherein the foam glass includes greater than 5% alumina by weight of the foam glass and has a coefficient of thermal expansion ranging between 4×10?6 ppm/° C. and 6×10?6 ppm/° C. A composition for making foam glass may include natural glass including at least 5% alumina by weight of the composition, soda ash including less than 10% by weight of the composition, and boric acid including at least 5% by weight of the composition. A method for making foam glass may include mixing natural glass with boron to form a mixture, milling the mixture, melting the mixture at a temperature of at least 900° C., and allowing the melted mixture to cool, such that the foam glass includes at least 5% alumina by weight of the foam glass and at least 5% boron oxide by weight of the foam glass.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: January 20, 2015
    Assignee: Imerys Filtration Minerals, Inc.
    Inventor: Bo Wang
  • Publication number: 20150018195
    Abstract: The invention relates to a method for preparing a ceramic material, in particular porcelain, having a porous, foam-like structure, comprising the steps of providing a clay composition comprising kaolin clay; alkali metal salt and/or alkaline earth metal salt, or a mixture thereof; a plastic mineral clay; and a frit; and water; shaping said composition in a mould; drying said composition in said mould by subjecting it to temperatures below 140° C.; firing said composition in said mould by subjecting it to temperatures within the range of 700-1200° C. The invention also pertains to objects made of this foamed ceramic material.
    Type: Application
    Filed: March 13, 2013
    Publication date: January 15, 2015
    Applicant: Joris Laarman Studio BV
    Inventor: Marjan Van Aubel
  • Patent number: 8926874
    Abstract: The present invention relates to a porous manganese oxide-based lithium absorbent and a method for preparing the same. The method includes the steps of preparing a mixture by mixing a reactant for the synthesis of a lithium-manganese oxide precursor powder with an inorganic binder, molding the mixture, preparing a porous lithium-manganese oxide precursor molded body by heat-treating the molded mixture, and acid-treating the porous lithium-manganese oxide precursor molded body such that lithium ions of the porous lithium-manganese oxide precursor are exchanged with hydrogen ions, wherein pores are formed in the lithium-manganese oxide precursor molded body by gas generated in the heat treatment. The porous manganese oxide-based lithium adsorbent according to the present invention is easy to handle and has many more adsorption reaction sites compared to existing molded adsorbents, thus providing high lithium adsorption efficiency.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: January 6, 2015
    Assignee: Korea Institute of Geoscience and Mineral Resources (KIGAM)
    Inventors: Kang-Sup Chung, Tae Gong Ryu, Byoung Gyu Kim, Jung Ho Ryu
  • Patent number: 8926875
    Abstract: The invention is directed to a method for managing pore size distribution in honeycomb substrates by using two or more pore forming agents in the batch ingredients. In particular, the invention is particularly useful in managing pore size distribution in cordierite and aluminum titanate honeycomb substrates in the face of particle size variations in the pore forming agents and other materials used to make such substrates.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: January 6, 2015
    Assignee: Corning Incorporated
    Inventors: Mark Allen Spetseris, Balaji Venkatesan Swarnamani, Conor J Walsh, Gregory N Yourkievitz
  • Publication number: 20140374938
    Abstract: Disclosed is a process for producing ceramic particles, such as proppants, that have at least 10 percent total porosity. The process includes forming a particle precursor that includes 5 percent to 30 percent of a first ceramic material and at least 40 percent of a second ceramic material. The sintering temperature of the first ceramic material may be lower than the sintering temperature of a second ceramic material. Heating the precursor to a maximum temperature above the sintering temperature of the first material and below the sintering temperature of the second material. Also disclosed is a ceramic article that has a particular combination of chemistry and alumina crystalline phase.
    Type: Application
    Filed: June 25, 2013
    Publication date: December 25, 2014
    Inventors: Tihana FUSS, Laurie San-Miguel, Kevin R. Dickson, Walter T. Stephens
  • Patent number: 8916488
    Abstract: A sliding member having a sliding surface comprising a silicon carbide sintered body having a primary phase comprising mainly silicon carbide, and a subphase having a different composition from the primary phase and containing at least boron, silicon and carbon. The ratio of pores having a roundness of 6 ?m or less and a pore diameter of 10 to 60 ?m with respect to all pores having a pore diameter of 10 ?m or more in the sliding surface is 60% or more. This enables retention of good seal properties even in a long-term continuous use. The subphase in the silicon carbide sintered body is preferably granular crystal phases dotted among a plurality of the primary phases. This provides excellent lubricating liquid holding performance as well as excellent thermal conductivity and excellent thermal shock resistance properties.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: December 23, 2014
    Assignee: Kyocera Corporation
    Inventors: Yuusaku Ishimine, Kazuaki Takigawa
  • Publication number: 20140363618
    Abstract: A method for manufacturing a ceramic honeycomb structure includes kneading titania particles, alumina particles and a binder such that a raw material paste containing the titania particles, the alumina particles and the binder is prepared, forming a body made of the raw material paste and having the honeycomb structure, and sintering the body having the honeycomb structure such that a ceramic body having the honeycomb structure and made of aluminum titanate is formed. The kneading includes combining the binder, a titania powder containing the titania particles and an alumina powder containing the alumina particles, and the titania powder includes potassium in an amount of from 100 ppm to 600 ppm with respect to the titania powder in a weight ratio based on conversion from K2O.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Applicant: IBIDEN CO., LTD.
    Inventor: Kazunori YAMAYOSE
  • Publication number: 20140363620
    Abstract: A method for manufacturing a ceramic honeycomb structure includes kneading titania particles, alumina particles and a binder such that a raw material paste containing the titania particles, the alumina particles and the binder is prepared, forming a body made of the raw material paste and having the honeycomb structure, and sintering the body having the honeycomb structure such that a ceramic body having the honeycomb structure and made of aluminum titanate is formed. The titania particles are secondary titania particles each comprising primary titania particles aggregated such that the secondary titania particles have a mean volume particle diameter in the range of from 5 ?m to 20 ?m, and the alumina particles have a mean volume particle diameter in the range of from 2 ?m to 5 ?m.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Applicant: IBIDEN CO., LTD.
    Inventor: Kazunori YAMAYOSE
  • Publication number: 20140363619
    Abstract: A method for manufacturing a ceramic honeycomb structure includes kneading titania particles, alumina particles and a binder such that a raw material paste containing the titania particles, the alumina particles and the binder is prepared, forming a body made of the raw material paste and having the honeycomb structure, and sintering the body having the honeycomb structure such that a ceramic body having the honeycomb structure and made of aluminum titanate is formed. The kneading includes combining the binder, a titania powder containing the titania particles and an alumina powder containing the alumina particles, and the titania powder includes magnesium in an amount of 500 ppm or less with respect to the titania powder in a weight ratio based on conversion from MgO.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Applicant: IBIDEN CO., LTD.
    Inventor: Kazunori YAMAYOSE
  • Patent number: 8894895
    Abstract: This disclosure is directed to porous ceramic processing; and in particular to a method using selected pore forming materials to avoid high exotherms during the ceramic firing process, and the green bodies formed using the selected pore forming materials. The selected pore forming materials are homogeneous wax/non-ionic surfactant particles formed by a prilling process in which the wax is melted and the non-ionic surfactant is mixed into the wax prior to prilling. The disclosure is useful in the manufacture porous ceramic honeycomb bodies including ceramic honeycomb filter traps.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: November 25, 2014
    Assignee: Corning Incorporated
    Inventors: Michele Fredholm, David Henry, Maxime Moreno
  • Publication number: 20140338571
    Abstract: A method of forming an aggregate. The method comprising forming a green pellet including waste glass and additive(s). The unfired pellets are coated with a refractory material and sintered such that some of the additive/additives breaks down to generate gas which is at least partially retained in the microstructure of the mixture to form pores, the additive/additives so being that upon heating the additive/additives and glass combine to produce glass ceramics.
    Type: Application
    Filed: December 21, 2012
    Publication date: November 20, 2014
    Applicant: NOVAGG LIMITED
    Inventor: Michael EVANS
  • Publication number: 20140302979
    Abstract: A porous ceramic for which any decrease in water permeability can be suppressed over a long period of time. A porous ceramic is composed of a porous ceramic sintered body produced by molding and sintering a mixture containing a clay, wherein a surface portion of the porous ceramic sintered body has been removed by grinding. The mixture preferably contains a foaming agent.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 9, 2014
    Inventors: Teruhiro Okuya, Yutaka Hayashi, Kohsuke Togashi, Akihisa Kaneda, Takeshi Ohta
  • Patent number: 8846557
    Abstract: The present invention relates to a ceramic composition and a porous ceramic insulating material comprising the same, which is widely used as a core material in sandwich panels or fire doors. The ceramic composition comprises 44-60 wt % of glass powder, 8-15 wt % of fly ash, 4-8 wt % of surface treatment agent, and 23-29 wt % of water glass. The porous ceramic insulating material manufactured from the composition is lightweight and is an environmentally friendly material which generates no toxic gas when it catches fire. The ceramic insulating material can be produced at a low temperature of 800˜900° C., and thus has low production cost. In addition, it can be continuously manufactured in a sheet form.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: September 30, 2014
    Assignee: GMatex Co., Ltd.
    Inventors: Jae Young Rim, Jeong In Lim, Kil Sue Lhim
  • Publication number: 20140205918
    Abstract: A storage element for a solid electrolyte battery is provided. The storage element has a main member having a porous matrix of sintered ceramic particles in which particles that are made of a metal and/or a metal oxide and jointly form a redox couple are embedded. Along a preferred direction, the storage element has a certain concentration gradient of the particles made of the metal and/or the metal oxide and/or a certain gradient of a pore density and/or a pore size, thereby allowing the diffusion behavior of oxygen ions within the main member to be controlled and thus the charge and discharge kinetics, the life and the capacity of the battery to be improved.
    Type: Application
    Filed: September 3, 2012
    Publication date: July 24, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Carsten Schuh, Thomas Soller
  • Publication number: 20140202125
    Abstract: A method of manufacturing a honeycomb structure comprises a step of forming a molded article by molding a raw material containing a ceramic powder and a pore-forming agent; and a step of manufacturing a honeycomb structure by sintering the molded article, wherein the pore-forming agent is powder formed of a material that disappears at a sintering temperature or less where the molded article is sintered, the powder is obtained by mixing a small particle size powder and a large particle size powder, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the small particle size powder is 50% is 5 to 20 ?m, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 50% is 30 ?m or more, and a ninety-percentage particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 90% is 80 ?m or less.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 24, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuharu KOBASHI, Tetsuro TOHMA, Kentaro IWASAKI
  • Publication number: 20140128242
    Abstract: An object of the invention is to provide, in porous thermal insulating firebricks formed by molding and drying bubble-containing slurry obtained by foaming slurry containing a fire resistant powder and water, a thermal insulating firebrick superior in thermal insulating property in spite of the same composition and porosity. A porous thermal insulating firebrick formed by molding and drying bubble-containing slurry obtained by foaming slurry containing a fire resistant powder with a heat resistant temperature of 1,000° C. or higher and water has the porosity of 60% or more, and 80% or more volume with respect to a total pore volume of the inside of the thermal insulating firebrick consists of pores having a pore size of 200 ?m or less.
    Type: Application
    Filed: June 4, 2012
    Publication date: May 8, 2014
    Applicant: HINOMARU YOGYO CO., LTD.
    Inventors: Daisuke Taniyama, Yasunari Nagasaki, Akira Terasawa
  • Publication number: 20140103560
    Abstract: A ceramic honeycomb structure having a large number of flow paths partitioned by porous cell walls, the cell walls meeting the conditions; (a) the cell walls having porosity of 55-80%, (b) the cell walls having a median pore diameter D50 (measured by mercury porosimetry) of 5-27 ?m, (c) pores open on cell wall surfaces having an opening area ratio of 20% or more, (d) pores open on cell wall surfaces having a median opening diameter d50 (determined from equivalent circle diameters on an area basis) of 10-45 ?m, (e) the density of pores open on cell wall surfaces having equivalent circle diameters of 10 ?m or more and less than 40 ?m being 350/mm2 or more, (f) the maximum inclination of a curve of a cumulative pore volume relative to a pore diameter (determined from a pore distribution measured by mercury porosimetry) being 1.6 or more, and (g) a ratio D50/d50 of the median pore diameter D50 to the median opening diameter d50 being 0.65 or less.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: HITACHI METALS, LTD.
    Inventor: Shunji OKAZAKI
  • Publication number: 20140084505
    Abstract: A method of making an aluminum titanate ceramic article including: selecting properties for the aluminum titanate-containing ceramic body to be made by the method, the selected properties include pore size, modulus of rupture (MOR), or both; selecting a fine-to-coarse weight ratio (f:c) of fine alumina particles and coarse alumina particles for a batch, the total amount of the fine and the coarse alumina particles is from 44 to 52 weight percent of the batch; forming an aluminum titanate batch mixture including the selected fine-to-coarse weight ratio (f:c) of the fine alumina particles and the coarse alumina particles; forming a green body from the batch mixture; and firing the green body to obtain an aluminum titanate-containing ceramic body having the selected properties, as defined herein.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 27, 2014
    Inventors: Elizabeth Marie Vileno, Christopher John Warren
  • Publication number: 20140038820
    Abstract: The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-Al2O3, to methods for producing the substrate material, and to the use of the substrate material.
    Type: Application
    Filed: April 23, 2012
    Publication date: February 6, 2014
    Applicant: CERAM TEC GMBH
    Inventors: Roland Heinl, Peter Schröter, Klaus Stöckl
  • Publication number: 20140038819
    Abstract: The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-Al2O3, to methods for producing the substrate material, and to the use of the substrate material.
    Type: Application
    Filed: April 23, 2012
    Publication date: February 6, 2014
    Applicant: Ceram Tec GmbH
    Inventors: Roland Heinl, Peter Schröter, Klaus Stöckl
  • Patent number: 8613876
    Abstract: A method for the production of a macroporous ceramic foam, wherein: (a) forming a ceramic slip comprising a substantially homogeneous mixture of a ceramic particulate, an organic binder in a liquid carrier, and optionally one or more surfactants, wherein at least one surfactant is present if the organic binder does not function as a surfactant, and wherein the ceramic slip preferably has a viscosity in the range of from 15 to 200 mPas?1; (b) foaming the ceramic slip; and (c) heating the foamed ceramic slip at a temperature sufficient to substantially burn out the organic binder. The macroporous ceramic foam is suitable for use in biomedical applications such as synthetic bones, tissue engineering scaffolds or drug delivery devices.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: December 24, 2013
    Assignee: ApaTech Limited
    Inventors: Karin Angela Hing, William Bonfield
  • Publication number: 20130334723
    Abstract: Disclosed is a method for fabricating a solid article from a boron carbide powder comprising boron carbide particles that are coated with a titanium compound. Further disclosed herein are the unique advantages of the combined use of titanium and graphite additives in the form of water soluble species to improve intimacy of mixing in the green state. The carbon facilitates sintering, whose concentration is then attenuated in the process of forming very hard, finely dispersed Ti B2 phases. The further recognition of the merits of a narrow particle size distribution B4C powder and the use of sintering soak temperatures at the threshold of close porosity which achieve post-HlP ed microstructures with average grain sizes approaching the original median particle size. The combination of interdependent factors has led to B4C-based articles of higher hardness than previously reported.
    Type: Application
    Filed: December 28, 2011
    Publication date: December 19, 2013
    Inventors: Charles Schenck Wiley, Robert F. Speyer
  • Publication number: 20130307177
    Abstract: Provided is a method of manufacturing porous ceramic bodies with gradient of porosity, in which a gradient that is continuous to a pore size and porosity is precisely controlled in a simple way. The method includes the steps of: obtaining molded bodies by pressurizing and molding a mixture of powder obtained by mixing ceramic powder and polymer powder at a weight ratio of 1:1 to 100:1; and obtaining sintered bodies with gradient of porosity by sintering the molded bodies while applying a gradient pressure to the molded bodies.
    Type: Application
    Filed: June 19, 2012
    Publication date: November 21, 2013
    Applicant: SNU R&DB FOUNDATION
    Inventors: Kug Sun HONG, Ki Tae NAM, Hae Lin JANG, Kyoung Suk JIN, Jingming XU, Tae-Youl YANG, Jimin PARK, Hui-Yun JEONG
  • Publication number: 20130307176
    Abstract: A method for making a cordierite filter article, including: firing an extruded green body batch composition according to: a first temperature ramping from ambient temperature up to a first soaking temperature; a first soaking at a temperature of at least 1255° C. for at least 2 hours; a second temperature ramping from the first soak temperature down to a second soak temperature; and a second soaking at a temperature of at least 1250° C. and at least 5° C. below the first soaking temperature, as defined herein.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 21, 2013
    Inventors: David J. Bronfenbrenner, Lisa Larae Hepburn, Sriram Rangarajan Iyer, Lev Lvovitch Kuandykov, Dell Joseph St Julien, Elizabeth Ann White
  • Publication number: 20130299429
    Abstract: A method for processing fines materials generated as a by-product from the screening and washing of sand and gravel includes the steps of drying, pelletising and firing the fines materials to produce a ceramic material in the form of porous pellets which have enhanced properties for the removal of phosphorus and pathogens from wastewater.
    Type: Application
    Filed: November 21, 2011
    Publication date: November 14, 2013
    Applicant: PHOSBOX TECHNOLOGIES LIMITED
    Inventors: Noel Connaughton, Dermot Nally, Jamie Wood
  • Patent number: 8580058
    Abstract: There is disclosed a reinforcement material for forming reinforced members. The reinforcement material includes a strengthening material which is preferably a fabric disposed at least partially between portions of matrix material.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: November 12, 2013
    Assignee: Zephyros, Inc.
    Inventors: Michael J. Czaplicki, David Carlson
  • Publication number: 20130255211
    Abstract: [Problem] To provide a filter whose initial collection efficiency can be increased and whose pressure loss increase can be suppressed. [Means to solve the problem] A ceramic filter includes: numerous crystalline masses bound to one another each formed of aggregation of columnar crystals, wherein a number of large diameter pores are present between the numerous crystalline masses, and small diameter pores are present between the numerous columnar crystals forming the crystalline mass.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 3, 2013
    Applicant: KUBOTA CORPORATION
    Inventors: Atsushi Sugai, Hiroshi Yamaguchi
  • Publication number: 20130244860
    Abstract: The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.
    Type: Application
    Filed: April 30, 2013
    Publication date: September 19, 2013
    Applicant: CORNING INCORPORATED
    Inventors: Daniel Edward McCauley, Anthony Nicholas Rodboum, Patrick David Tepesch, Christopher John Warren
  • Patent number: 8435327
    Abstract: A carbon dioxide permeable membrane is described. In some embodiments, the membrane includes a body having a first side and an opposite second side; a plurality of first regions formed from a molten carbonate having a temperature of about 400 degrees Celsius to about 1200 degrees Celsius, the plurality of first regions forming a portion of the body and the plurality of first regions extending from the first side of the body to the second side of the body; a plurality of second regions formed from an oxygen conductive solid oxide, the plurality of second regions combining with the plurality of first regions to form the body and the plurality of second regions extending from the first side of the body to the second side of the body; and the body is configured to allow carbon dioxide to pass from the first side to the second side.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: May 7, 2013
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Klaus S. Lackner, Alan C. West, Jennifer L. Wade
  • Publication number: 20130029129
    Abstract: The present invention relates to a ceramic composition and a porous ceramic insulating material comprising the same, which is widely used as a core material in sandwich panels or fire doors. The ceramic composition comprises 44-60 wt % of glass powder, 8-15 wt % of fly ash, 4-8 wt % of intercrete as a surface treatment agent, and 23-29 wt % of water glass. The porous ceramic insulating material manufactured from the composition is lightweight and is an environmentally friendly material which generates no toxic gas when it catches fire. The ceramic insulating material can be produced at a low temperature of 800˜900° C., and thus has low production cost. In addition, it can be continuously manufactured in a sheet form.
    Type: Application
    Filed: February 17, 2011
    Publication date: January 31, 2013
    Applicant: GMATEK CO., LTD.
    Inventors: Jae Young Rim, Jeong In Lim, Kil Sue Lhim
  • Publication number: 20120317947
    Abstract: A ceramic honeycomb structure having a large number of flow paths partitioned by porous cell walls, the cell walls meeting the conditions; (a) the cell walls having porosity of 55-80%, (b) the cell walls having a median pore diameter D50 (measured by mercury porosimetry) of 5-27 ?m, (c) pores open on cell wall surfaces having an opening area ratio of 20% or more, (d) pores open on cell wall surfaces having a median opening diameter d50 (determined from equivalent circle diameters on an area basis) of 10-45 ?m, (e) the density of pores open on cell wall surfaces having equivalent circle diameters of 10 ?m or more and less than 40 ?m being 350/mm2 or more, (f) the maximum inclination of a curve of a cumulative pore volume relative to a pore diameter (determined from a pore distribution measured by mercury porosimetry) being 1.6 or more, and (g) a ratio D50/d50 of the median pore diameter D50 to the median opening diameter d50 being 0.65 or less.
    Type: Application
    Filed: February 18, 2011
    Publication date: December 20, 2012
    Applicant: HITACHI METALS, LTD.
    Inventor: Shunji Okazaki
  • Publication number: 20120315538
    Abstract: Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm2), and greater thickness than comparable electrodes while still providing high utilization of the active material in the battery during use. Accordingly, the electrodes can be used to produce batteries with high energy densities, high power, or both compared to batteries using electrodes of conventional design with relatively highly tortuous pores.
    Type: Application
    Filed: April 9, 2012
    Publication date: December 13, 2012
    Applicants: Massachusetts Instituteof Technology, The Regents of the University of Michigan, Lawrence Berkeley Laboratory
    Inventors: Yet-Ming Chiang, Chang-Jun Bae, John William Halloran, Qiang Fu, Antoni P. Tomsia, Can K. Erdonmez
  • Publication number: 20120287013
    Abstract: An antenna module includes a main body and a three-dimensional radiator embedded in the main body. The main body is made of foamed ceramic material. A method for making the antenna is also described.
    Type: Application
    Filed: November 4, 2011
    Publication date: November 15, 2012
    Applicants: FIH (HONG KONG) LIMITED, SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD.
    Inventors: XUE-LI ZHANG, YONG YAN, YONG-FA FAN, ZHAO-YI WU, QI-YUAN LI, LI LIU
  • Patent number: 8309012
    Abstract: A method for producing a ceramic honeycomb structure comprising the steps of mixing and blending at least a ceramic material and a pore-forming material to form a moldable material, extrusion-molding the moldable material, and drying and sintering the resultant molded honeycomb article, the amount of the pore-forming material added being adjusted depending on the packed bulk density of the pore-forming material.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: November 13, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventor: Syunji Okazaki
  • Publication number: 20120251922
    Abstract: An electrode is provided containing spherical voids which improve its gas diffusion properties and improving thermal stability of materials with different properties including the coefficient of thermal expansion. The electrode is especially useful as a component, i.e., cathode and/or anode, of solid oxide fuel cells.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 4, 2012
    Applicant: WATT Fuel Cell Corp
    Inventors: Caine M. Finnerty, Rebecca L. Sharp, Benjamin J. Emley