Abstract: To provide an optically transparent film containing 0.01 to 20% by weight glass forming oxide consisting of Nb2O5, V2O5, B2O3, SiO2, and P2O6; 0.01 to 20% by weight Al2O3 or Ga2O3; and 0.01 to 5% by weight hard oxide of ZrO2 and TiO2 as required; balance being ZnO, and a sputtering target for forming such a film. This sputtering target reduces occurrence of particles during sputtering, decreases the number of interruption or discontinuance of sputtering to improve production efficiency, and forms a protective film for optical disks with large transmittance and low reflectance.

Abstract: According to one aspect of the present invention an optically active glass contains Sb2O3, up to about 4 mole % of an oxide of a rare earth element, and 0-20 mole % of a metal halide selected from the group consisting of a metal fluoride, a metal bromide, a metal chloride, and mixtures thereof, wherein this metal is a trivalent metal, a divalent metal, a monovalent metal, and mixtures thereof. In addition, any of the glass compositions described herein may contain up to 15 mole % B2O3 substituted for an equivalent amount of Sb2O3.

Abstract: New and improved compositions of doped and co-doped germanium fluorophosphate glasses for laser hosts and fiber amplifiers have a high refractive index (nD) 1.67-1.70, high transmission in the near infrared part of the spectra (to 6 micron) and a wide glass-forming domain. These glass systems [BaGe4O9—Ba(PO3)2—RFx] contain (mol %): BaF2, CaF2, MgF2, BiF3, PbF2 of 10 to 70 percent and GeO2 7.31 to 58.48 percent, P2O5 of 4.81 to 38.50 percent, BaO of 7.86 to 62.94 percent where dopants and co-dopants are over 100 percent (in wt %): Nd2O3(NdF3) of 0.5 to 15 percent, Er2O3(ErF3) of 0.2 to 12 percent, Yb2O3(YbF3) of 1.0 to 15 percent, Ho2O3(HoF3) of 1.0 to 10 percent, Pr2O3(PrF3) of 0.5 to 12 percent, Tm2O3(TmF3) of 0.2 to 10 percent, Tb2O3(TbF3) of 0.1 to 10 percent, MnO(MnF2) of 0.5 to 20 percent.

Abstract: The invention is a method of producing a ceramics material comprising the steps of: preparing a raw powder in which alumina particles having an average particle diameter of 0.1-1.0 &mgr;are doped with at least magnesia of 0.01-1 weight % and a solution containing yttrium of 0.1-15 weight % in yttria; molding said raw powder and calcining a molding thus created; and heating the calcined molding in an atmosphere containing a hydrogen gas to create YAG which is leached to the surface to deposit YAG on the surface and sintering the molding.

Abstract: A bulk single phase glass comprising 23 molar % to 50 molar % rare earth oxides, RE203, and 50 molar % to 77 molar % aluminum oxide, A12O3 is provided. The glass contains at least 50 molar % of Al2O3+RE2O3 and smaller amounts of oxide glass forming agents and other oxides than are found in prior art glasses. The addition of small amounts of lanthanum oxide, La2O3, prevents phase separation. The single phase glass is useful for optical applications such as lasers and optical amplifiers.

Abstract: Glasses of the present invention are tellurite and oxyhalide glasses doped with rare-earth ion, which can be applied to highly efficient optical amplifiers and lasers for optical communication. They are thermally and chemically stable during and after the fabrication processes of the optical fiber. The glass material includes 20˜70 mole % of TeO2, a heavy metal oxide, 0.001˜10 mole % of a rare earth ion dopant, 5˜30 mole % of MO, M being selected from a group consisting of Mg, Ca, Sr, Ba, Zn and Pb, and optionally 1˜20 mole % of R2O, R being selected from a group consisting of Li, Na, K, Rb and Cs. In the composition of the glass, 3˜18 mole % of MO and R2O may be substituted by the metal halides. The glasses of the present invention are similar in phonon energy to the conventional tellurite glasses not to increase the non-radiative transition rate. Further, the fluorescence lifetime is additionally increased in case of partial substitution of oxide to halide.

Abstract: A family of tellurite glasses and optical components for telecommunication systems, the glasses consisting essentially of, as calculated in cation percent, 65-97% TeO2, and at least one additional oxide of an element having a valence greater than two and selected from the group consisting of Ta, Nb, W, Ti, La, Zr, Hf, Y, Gd, Lu, Sc, Al and Ga, that may contain a lanthanide oxide as a dopant, in particular erbium oxide, and that, when so doped, is characterized by a fluorescent emission spectrum having a relatively broad FWHM value.

Abstract: A glass consisting essentially of antimony oxide. An optically active glass consisting essentially of antimony oxide and up to about 4 mole % of an oxide of a rare earth element. A rare earth-doped, antimony oxide-containing glass including 0-99 mole % SiO2, 0-99 mole % GeO2, 0-75 mole % (Al, Ga)2O3, 0.5-99 mole % Sb2O3, and up to about 4 mole % of an oxide of a rare earth element. The oxide of the rare earth element may comprise Er2O3. The glass of the invention further includes fluorine, expressed as a metal fluoride. An optical energy-producing or light-amplifying device, in particular, an optical amplifier, comprising the above-described glass. The optical amplifier can be either a fiber amplifier or a planar amplifier, either of which may have a hybrid composition. Embodiments of the glass of the invention can be formed by conventional glass making techniques, while some of the high content antimony oxide embodiments are formed by splat or roller quenching.

Abstract: A doped TiO2 material for forming a film used in a planar optical waveguide amplifier. The doped TiO2 material includes 100 mol % TiO2 precursor compound, 0.1˜10 mol % erbium ion (Er3+) precursor compound, and 1˜50 mol % yttrium ion (Y3+) precursor compound, thereby forming the doped TiO2 film co-doped with erbium and yttrium as an amorphous structure to achieve the enhancing effect on photoluminescence properties.

Abstract: Alkali tungstate, molybdate and vanadate glasses, and telecommunications components embodying such glasses, the compositions of the glasses consisting essentially of 15-70 mol percent of at least one oxide selected from the group consisting of WO3, MoO3 and VO2.5, 0-35% CrO3, 0-15% UO3, the total WO3 plus MoO3 plus VO2.5 plus CrO3 plus UO3 being 50-70%, 20-50% R2O where R represents at least two elements selected from the group consisting of Li, Na, K, Rb, Cs, Ag and T1, and optionally containing 0-10% MO where M is selected from the groups of elements consisting of Ca, Ba, Sr, Mg, Cd, Pb, 0-5 % X2O3 where x is at least one element selected from the group consisting of Al, Ga, In and Bi, 0-5% of at least one transition metal oxide, 0-15% P2O5 and/or TeO2 and 0-5% of a rare earth oxide selected from the lanthanide series.

Abstract: A family of alkali-tungsten-tellurite glasses that consist essentially of, as calculated in mole percent, 10-90% TeO2, at least 5% W03 and at least 0.5% R2O where R is Li, Na, K, Cs, Tl and mixtures, that may contain a lanthanide oxide as a dopant, in particular erbium oxide, and that, when so doped, is characterized by a fluorescent emission spectrum having a relatively broad FWHM value.

Abstract: An optical amplifier glass comprising a matrix glass containing Bi2O3 and at least one of Al2O3 and Ga2O3, and Er doped to the matrix glass, wherein from 0.01 to 10% by mass percentage of Er is doped to the matrix glass which has a total content of Al2O3 and Ga2O3 of at least 0.1 mol %, a content of Bi2O3 of at least 20 mol %, a refractive index of at least 1.8 at a wavelength of 1.55 &mgr;m, a glass transition temperature of at least 360° C. and an optical basicity of at most 0.49.

Abstract: A glass includes (a) a matrix containing a compound of at least one nonmetallic element; and (b) a particle selectively formed in the matrix. This particle is made of the at least one nonmetallic element. A process for producing such glass includes (a) providing a blank glass containing a compound of at least one nonmetallic element; (b) condensing a pulsed laser beam to a focal point in the blank glass such that a particle is selectively formed in the blank glass at a position corresponding to the focal point, the particle being made of the at least one nonmetallic element dissociated from the compound; and (c) moving the focal point in the blank glass to produce a pattern of the particle. The glass is suitable for optical functional elements.

Abstract: A GeAs sulphide glass family of transparent glasses having transmission far into the infrared portion of the spectrum, containing a source of phosphorus ion as a co-dopant to effect dispersion of a rare earth metal ion dopant in the glass, an optical component comprising the glass, and a method of dispersing a rare earth metal ion in the glass.

Abstract: A family of aluminoborate glasses that are compatible with aluminum at elevated temperatures, and an article comprising such a glass with either an aluminum coating, or with aluminum particles dispersed within the glass, whereby the glass may be rendered polarizing. The base glass consists essentially of, 15-85% B2O3, 5-45% Al2O3 and 10-75% Li2O+RO, where RO represents the alkaline earth metal oxides MgO, CaO, SrO and BaO, and is free of oxides reacting with aluminum at elevated temperatures.

Abstract: A family of alkali-tungsten-tellurite glasses that consist essentially of, as calculated in mole percent, 10-90% TeO2, at least 5% WO3 and at least 0.5% R2O where R is Li, Na, K, Cs, Tl and mixtures, that may contain a lanthanide oxide as a dopant, in particular erbium oxide, and that, when so doped, is characterized by a fluorescent emission spectrum having a relatively broad FWHM value.

Abstract: The present invention relates to an optical thin film containing titanium oxide, cerium oxide and bismuth oxide, wherein the content ratio of the titanium oxide, cerium oxide, and bismuth oxide is within the area expressed by four-cornered shape ABCD consisting of A (4,1,95), B (98,1,1), C (20,79,1), and D (3,14,83) in term of coordinate points (TiO.sub.2 mol percent, CeO.sub.2 mol percent, and Bi.sub.2 O.sub.3 mol percent) of the mol ratio when being converted to oxides of TiO.sub.2, CeO.sub.2, and Bi.sub.2 O.sub.3. Furthermore, with the invention, a comparatively high refractive index film layer and a comparatively low refractive index film layer are alternately laminated at least three layers on a transparent glass substrate, at least two layers of said three layers are high refractive index films, and at least one layer of said high refractive index films is said optical thin film.

Abstract: According to the present invention, there is provided a fluorophosphate fluorescent glass, capable of converting invisible ultraviolet rays into visually observable visible rays with a high efficiency and available for controlling the optical axis of a laser beam such as excimer laser, etc. The feature of this fluorescent glass consists in a fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, (I) phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and (II) at least one member selected from the group consisting of divalent europium, terbium, samarium and manganese, as a fluorescent agent, the divalent europium being contained as an essential component and at least one of samarium and manganese being contained as an essential component when terbium is contained.

Abstract: A metal/glass paste composition with a high metal to glass ratio and a method of using the paste to adhesively connect an integrated circuit to a ceramic substrate. The glass composition consists essentially of, by weight percent on an oxide basis:about 40-65% Ag.sub.2 Oabout 15-35% V.sub.2 O.sub.5about 0-30% PbO.sub.2about 0-20% TeO.sub.2The essentially resin-free paste utilizes the glass composition described above and, for a metallized ceramic substrate, has a metal:glass ratio of from about 8:1 up to about 11.5:1. For a bare (nonmetallized) ceramic substrate, the paste has a metal:glass ratio of from about 8:1 up to about 32:1.

Abstract: A method for decreasing the amount of nitrogen and oxygen containing compounds employed in glass batch mixtures. Oxygen fuel burners are utilized to provide an oxidizing atmosphere to the molten glass in the place of the reduced or eliminated nitrogen and oxygen containing compounds.

Abstract: A magnetic head of the present invention includes a pair of substrates which are formed of ferrite and sealed with sealing glass, wherein an averaged thermal expansion ratio of the sealing glass in the range of 30.degree. C. to a setting temperature .alpha..sub.Ts (glass) is smaller than an averaged thermal expansion ratio of the substrate in the range of 30.degree. C. to a setting temperature .alpha..sub.Ts (substrate); and a difference between a thermal expansion ratio at a glass transition temperature of the sealing glass and a thermal expansion ratio at a yielding temperature thereof is 2.times.10.sup.-3 or less.

Abstract: The invention relates to fiber structures in the form of refractory light-weight moldings. These fiber structures exhibit the advantage that they do not contain, or contain virtually no harmful fibers, and/or that such fibers that might still exist in the fiber structures can be readily decomposed by water or body fluids. Nevertheless, the fiber structures exhibit the advantageous thermal and mechanical properties of conventional light-weight moldings. The fiber structures according to the invention are manufactured using inorganic fibers, wherein at least 90% by weight of each fiber comprises 20-50% by weight of CaO and 50-80% by weight of Al.sub.2 O.sub.3. The rest comprises a maximum of 10% by weight of typical impurity oxides. Water or a water-containing liquid is used as the charge liquid, and conventional refractory additives may also be added to the mixture of fibers and water to be molded.

Abstract: A glass composition and method of use having unique crystallization and crystal remelt properties is disclosed. The glass composition consists essentially by weight percent on an oxide basis:about 40-65% Ag.sub.2 Oabout 15-35% V.sub.2 O.sub.5about 0-30% PbO.sub.2about 0-20% TeO.sub.2The present invention also contemplates a unique, essentially resin-free organic system that utilizes the novel glass composition described above and has a ratio of silver to glass (solids) of from about 3 to 1 to about 8 to 1.

Abstract: The present invention is directed to a solid electrolyte and a process for making the same for a sodium-sulfur secondary cell including a composition of 7.0 to 10.0 weight percent of Na.sub.2 O, 0.5 to 3.5 weight percent of MgO or 0.7 to 1.0 weight percent of Li.sub.2 O, 0.01 to 0.6 weight percent of WO.sub.3, and the balance of Al.sub.2 O.sub.3. The solid electrolyte is prepared by mixing Na.sub.2 O, MgO, Li.sub.2 O, WO.sub.3, and Al.sub.2 O.sub.3, calcining the resulting mixture, pulverizing the calcined body, and subjecting the resulting powders to sintering. Alternatively, the solid electrolyte is prepared by mixing Na.sub.2 O, MgO, or Li.sub.2 O, and Al.sub.2 O.sub.3 with one another, calcining the mixture, adding WO.sub.3 to the calcined body, pulverizing the resulting material, and subjecting the resulting powders to sintering.

Abstract: A low temperature sealing composition consists essentially of 45.0 to 85.0 wt. % of PbO, 1.0 to 11.0 wt. % of B.sub.2 O.sub.3, 1.0 to 45.0 wt. % of Bi.sub.2 O.sub.3, 0.2 to 10.0 wt. % of Fe.sub.2 O.sub.3, 0 to 15.0 wt. % of ZnO, 0 to 5.0 wt. % of CuO, 0 to 5.0 wt. % of V.sub.2 O.sub.5, 0 to 3.0 wt. % of SnO.sub.2, 0 to 5.0 wt. % of SiO.sub.2 plus Al.sub.2 O.sub.3, 0 to 7.0 wt. % of BaO, 0 to 5.0 wt. % of TiO.sub.2, 0 to 5.0 wt. % of ZrO.sub.2 and 0 to 6.0 wt. % of F.sub.2. The sealing composition has a low sealing temperature of 400.degree.C. or lower and is useful for readily sealing IC packages and display panels without application of load. In order to adjust the thermal coefficient of expansion, the sealing glass composition may be used by mixing with 20 vol. % to 55 vol. % of refractory filler powder of such as lead titanate based ceramics, willemite based ceramics, cordierite ceramics, zircon based ceramics or tin oxide based ceramics.

Abstract: The invention relates to inorganic fibers, and a process for their production. The inorganic fibers lose their fiber form factor after a short contact period with water or a physiological body fluid, so that danger to health is not expected from such fibers remaining for a prolonged period of time in or on human tissue. The fiber of the invention is characterized by the fact that at least 90% of it comprises 20-50% by weight of CaO and 50-80% by weight of Al.sub.2 O.sub.3. The rest comprises a maximum of 10% by weight of typical impurity oxides.

Abstract: A glass composition and method of use having unique crystallization and crystal remelt properties is disclosed. The glass composition consists essentially by weight percent on an oxide basis:about 40-65% Ag.sub.2 Oabout 15-35% V.sub.2 O.sub.5about 0-30% PbO.sub.2about 0-20% TeO.sub.2The present invention also contemplates a unique, essentially resin-free organic system that utilizes the novel glass composition described above.

Abstract: The invention relates to a sealing composition suitable for bonding yttria or alumina ceramic members, or bonding refractory metals to the ceramics. The sealing composition has, in mole percent, about 0.5 to 40 percent yttria, about 45 to 65 percent alumina, up to 10 mole percent strontia, and the balance substantially calcia.

Abstract: This invention relates to thallium germanate, tellurite, and antimonite glasses possessing high optical nonlinearity, as well as good visible and infrared transmission, making them suitable materials for the fabrication of active optical devices.

Abstract: An improved optical fiber for transmitting mid-infrared wavelength laser light in surgical instruments, includes, a heavy-metal oxide component, preferably GeO.sub.2 doped with heavier cations and anions, is capable of delivering of at least three watts of laser power continuously for more than ten minutes, without failure. This glass fiber has an .alpha.(dB/m) at 2.94.mu.m of 10, preferably less, and can transmit at least 27% of the IR through a thickness of one foot.

Abstract: A silver-glass paste comprising silver flake, lead vanadium telluride glass, resin, surfactant and a mixture of solvents, said mixture comprising at least two solvents selected from the group consisting of glycol ether, isoparaffin, and terpineol, each of said solvents having a boiling point of from about 170.degree. C. to about 230.degree. C. and a surface tension of from about 20 to about 30 dynes/cm.sup.2.

Abstract: This invention is directed to glasses exhibiting annealing points above 625.degree. C., strain points above 600.degree. C., linear coefficients of thermal expansion (25.degree.-300.degree. C.) below 90.times.10.sup.-7 /.degree. C., refractive indices below 1.8, and, in thicknesses of 2 mm, infrared transmissions of at least 50% to wavelengths longer than 6 .mu.m, consisting essentially expressed in terms of cation % on the oxide basis, of 5-40% KO.sub.0.5, 4-22% LaO.sub.1.5, 50-76% GaO.sub.1.5, and up to 15% total of at least one additional component in the indicated properties selected from the group consisting of______________________________________ BaO 0-5 NaO.sub.0.5 0-5 CaO 0-5 PbO 0-5 CsO.sub.0.5 0-10 ZnO 0-5 ReO.sub.1.5 0-5 Cl 0-5.

Abstract: A substrate material for a magnetic head, which comprises an oxide composed mainly of WO.sub.3 and has a thermal expansion coefficient of 100 to 130.times.10.sup.-7 /.degree. C., and a magnetic head using the substrate material.

Abstract: Low temperature sealing glass compositions comprising 35 to 80% by weight TeO.sub.2, 15 to 50% V.sub.2 O.sub.5 and 0.1 to 20% Nb.sub.2 O.sub.5, ZrO.sub.2 and/or ZnO.

Abstract: An aluminophosphate glass containing copper(II) oxide having a low transmission in the near infrared range with a steep absorption edge as well as a very uniform high transparency in the visible range is particularly suitable as filter glass for color video cameras or as filter glass, e.g., for goggles and color displays, said glass comprising, in % by weight on the oxide basis, 67-77 of P.sub.2 O.sub.5 ; 8-13 of Al.sub.2 O.sub.3 ; 0-5.5 of B.sub.2 O.sub.3 ; 0-2.1 of SiO.sub.2 ; 0-2.5 of Li.sub.2 O; 0-6 of Na.sub.2 O; 0-14 of K.sub.2 O; 0-2.5 of Rb.sub.2 O; 0-2.5 of Cs.sub.2 O; .SIGMA. alkali metal oxide 3-14; 2.5-4.9 of MgO; 0-2.5 of CaO; 0-2.5 of SrO; 0-2.5 of BaO; 0-2.5 of ZnO; .SIGMA. alkaline-earth metal oxides+ZnO less than 5; 2-7.5 of CuO; 0.001-0.5 of V.sub.2 O.sub.5 ; CuO+V.sub.2 O.sub.5 of 2-7.5.

Abstract: This invention relates to glasses exhibiting very high optical non-linearity, very high Verdet constants, very high electro-optic constants, and excellent transmissions of infrared radiation. The glasses consist essentially, in cation percent, of:______________________________________ T10.sub.0.5 20-55 GeO.sub.2 0-17 BiO.sub.1.5 0-67 PbO 0-40 GaO.sub.1.5 13-30 T10.sub.0.5 + BiO.sub.1.5 + PbO 70-87 SiO.sub.2 0-5 TeO.sub.

Abstract: A method of preparing a high temperature superconductor from an amorphous phase. The method involves preparing a starting material of a composition of Bi.sub.2 Sr.sub.2 Ca.sub.3 Cu.sub.4 Ox or Bi.sub.2 Sr.sub.2 Ca.sub.4 Cu.sub.5 Ox, forming an amorphous phase of the composition and heat treating the amorphous phase for particular time and temperature ranges to achieve a single phase high temperature superconductor.

Abstract: This invention is drawn to heavy metal oxide glasses exhibiting high nonlinear susceptibility and infrared transmission consisting essentially, in weight percent, of 42-48% PbO, 33-44% Bi.sub.2 O.sub.3, 10-15% Ga.sub.2 O.sub.3, and up to 15% total of at least one member of the group consisting of up to 5% SiO.sub.2 and/or GeO.sub.2 and up to 15% Tl.sub.2 O. This invention also comprehends the fabrication of light guiding fibers from those glasses.

Abstract: The present invention relates to a matrix glass composition for glass doped with dispersed CdS.sub.x Se.sub.y Te.sub.z (x+y+z=1) microcrystallites, which contains P.sub.2 O.sub.5 and/or B.sub.2 O.sub.3, and ZnO and/or CdO as essential constituent components, in which the total amount of P.sub.2 O.sub.5 and B.sub.2 O.sub.3 is in a range of from 35 to 65 mol %, and the total amount of ZnO and CdO is in a range of from 65 to 25 mol %. The present invention relates also to glass doped with dispersed microcrystallites which comprises a matrix glass composition as defined above as matrix glass, and CdS.sub.x Se.sub.y Te.sub.z (x+y+z=1) microcrystallites precipitated in the matrix glass.

Abstract: A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced mechanical properties. Superconductors are formed from the glass precursors by heating in the presence of oxygen to a temperature below the melting point of the glass.

Abstract: A low temperature sealing glass composition comprises a glass powder comprising 20 to 55 wt. % of PbO, 20 to 55 wt. % of V.sub.2 O.sub.5, 5 to 40 wt. % of TeO.sub.2, and 0 to 8 wt. % of Al.sub.2 O.sub.3 or (i) 50 to 80 vol. % of a glass powder comprising 20 to 55 wt. % of PbO, 20 to 55 wt. % of V.sub.2 O.sub.5, 5 to 40 wt. % of TeO.sub.2, and 0 to 8 wt. % of Al.sub.2 O.sub.3, and (ii) 20 to 50 vol. % of low thermal expansion ceramic fillers.

Abstract: This invention relates to the preparation of thermally stable, chemically durable, heavy metal oxide glasses exhibiting good transmission of infrared radiation to wavelengths of about 7 microns consisting essentially, in weight percent, of 7.5-25% Ga.sub.2 O.sub.3, 70-92% Bi.sub.2 O.sub.3, and 0.25-12% R.sub.2 O, wherein R.sub.2 O consists of at least one alkali metal oxide selected from the group consisting of Na.sub.2 O and K.sub.2 O.

Abstract: This invention is drawn to heavy metal oxide glasses exhibiting high nonlinear susceptibility and infrared transmission consisting essentially, in weight percent, of 42-48% PbO, 33-44% Bi.sub.2 O.sub.3, 10-15% Ga.sub.2 O.sub.3, and up to 15% total of at least one member of the group consisting of up to 5% SiO.sub.2 and/or GeO.sub.2 and up to 15% Tl.sub.2 O. This invention also comprehends the fabrication of light guiding fibers from those glasses.

Abstract: A crystal of a composition of silver, thallium, and sulfur is useful in non-linear optical devices, acousto-optical devices, piezo electric devices and other types of optical and acoustic devices. The chalcogenide glass composition of the invention displays superior transmission beyond 12 .mu.m.

Abstract: Described is a sealing glass composition comprising, in wt. %, 13-50% lead oxide, 20-50% vanadium oxide, 2-40% tellurium oxide, up to 40% selenium oxide, up to 10% phosphorous oxide, up to 5% niobium oxide, up to 20% bismuth oxide, up to 5% copper oxide and up to 10% boron oxide and an electrically conductive formulation comprising, in wt. %, 50-77% silver, 8-34% of a sealing glass composition as described previously, 0.2-1.5% resin and thixotrope and 10-20% organic solvent.

Abstract: Fluid, stable glasses useful for low-temperature sealing applications are made by adding jointly bismuth oxide, zinc oxide, phosphorus pentoxide, titania and/or zirconium oxide to the lead oxide vanadium oxide binary. The phosphorus pentoxide may be replaced partially or entirely with niobium pentoxide and/or tantalum oxide.Sealing glass compositions comprising these low-melting lead-vanadia glasses in powder form and refractory fillers of lower thermal expansion for use in hermetically sealing semiconductor devices in ceramic packages are disclosed. Group V metal oxides, particularly niobium-containing oxides, are preferred fillers. Silver metal is a preferred filler for making die-attach compositions.

Abstract: The soldering enamel is composed of a basic enamel consisting of aluminium oxide and a rare earth metal oxide and/or an alkali earth metal oxide and, in the given case, some other metallic or metalloid oxide, and of a ceramic filling material. The filling material is a zirconium-rare earth oxide of perovskite crystal structure. The quantity of the filling material amounts up to 5 mass % referred to the overall quantity of enamel.

Abstract: This invention presents a series of glasses which possess low softening points, high resistance to recrystallization and good durability in the presence of moisture. The glasses are contained within oxides of silver, vanadium, tellurium, and lead and have glass transition temperatures below 260.degree. C., and are useful in electronic applications such as die attach adhesives and sealing glasses.

Abstract: Fluid, stable glasses that are useful for low temperature sealing applications are made by adding jointly bismuth oxide, zinc oxide, and phosphorus pentoxide to the lead oxide-vanadium oxide binary. The phosphorous pentoxide may be replaced partially or entirely with niobium pentoxide and/or tantalum pentoxide. Additives and fillers may be incorporated into the glass composition to enhance the fluidity or adhesive characteristics of the glass, alter its coefficient of linear thermal expansion or make it suitable for die attach application. Group V metal oxides, particularly niobium pentoxide, are preferred fillers for altering the coefficient of linear thermal expansion. Similarly these Group V metal oxides may also be added as particulate fillers to lead borate, lead borosilicate and zinc borate glasses. Silver metal is a preferred filler for making die attach compositions.

Abstract: To tellurite optical glass comprising TeO.sub.2, high valence components are added and may be a combination of La.sub.2 O.sub.3, at least one of B.sub.2 O.sub.3 and GeO.sub.2, and at least one of Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.5. The high valence components may include Y.sub.2 O.sub.3, Gd.sub.2 O.sub.3, and Yb.sub.2 O.sub.3. Amounts of TeO.sub.2 and La.sub.2 O.sub.3 are restricted to ranges between 10% and 80% and between 5% and 35%, respectively. A sum of B.sub.2 O.sub.3 and GeO.sub.2 must fall within a range between 1% and 30%, with an amount of GeO.sub.2 restricted between 0% and 22%. A total of La.sub.2 O.sub.3, Y.sub.2 O.sub.3, Gd.sub.2 O.sub.3, and Yb.sub.2 O.sub.3 must be between 5% and 50%. A sum of Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.5 should range from 1% to 26%, with individual amounts of Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.5 kept between 0% and 20% and between 0% and 26%, respectively.