Compositions: ceramic inventions 08/06

20060194686 - Optical glass and process for producing optical element: An optical glass which has an internal transmittance to a light having a wavelength of 400 nm being at least 90% as calculated in a thickness of 1 mm and which contains at least 25 mol % of B2O3 and from 0.1 to 20 mol % of TeO2. The above...

20060194687 - Glass sheet suitable to toughening and toughened glass using said glass: The present invention provides a glass sheet having both temperability and shapability. This glass sheet has a soda-lime silica composition including 13.5 wt % to 16.0 wt % of Na2O. When the glass sheet is heated and then is quenched rapidly to become a tempered glass, the tempered glass satisfies...

20060194688 - Material for high temperatures: The present invention relates to a material for use at temperatures exceeding 1200° C. and in oxidizing atmospheres consisting generally of an alloy between a metal, aluminium (Al) and carbon (C) or nitrogen (N). The invention is characterized in that the alloy has a composition MzAlyXw where M essentially consists...

20060194689 - High-heat conductive si-containing material and its manufacturing method: A highly heat-conductive Si-containing material containing a Si phase whose lattice constant at room temperature is controlled at a level of more than 0.54302 nm but 0.54311 nm or less. Firing is conducted using a kiln material containing no B compound. With this highly heat-conductive Si-containing material and the process...

20060194690 - Alumina-based ceramic material and production method thereof: The present invention relates to an alumina-based ceramic material mainly comprising alumina, produced by shaping mixture of manganese-titanium composite oxide and a vanadium oxide and sintering the resulting shaped article, and a production method therefor. The alumina-based ceramic material in the present invention can be applied to uses for dielectric...

20060194691 - Low-temperature sintered barium titanate microwave dielectric ceramic material: The present invention relates to a low-temperature sintered barium titanate microwave dielectric ceramic material. The host matrix thereof can be represented by BaxTiyMZOX+2y+k, where x is 1˜6, y is 1˜17, z is 0˜1, k is 0˜3, M is an element substituting the Ba or Ti ion, for example selected from...

20060189470 - Lead-free and cadmium-free glass for glazing, enamelling and decorating glasses or glass-ceramics: A lead and cadmium free glass for decorating and enamelling glasses or glass-ceramics having a small coefficient of thermal expansion is disclosed comprising the following components (in wt.-%): Σ (Li2O+Na2O+K2O) 0 to 10, Σ (MgO+CaO+SrO)≧0.1, SiO2>65. Preferably, the glass according to the invention is mixed as a glass frit with...

20060189471 - Process and composition for the immobilization of radioactive and hazardous wastes in borosilicate glass: The present invention provides processes to immobilize radioactive and/or hazardous waste in a borosilicate glass, the waste containing one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds. The invention also provides borosilicate glass compositions for use in immobilizing radioactive and/or hazardous waste....

20060189472 - Grey glass composition: A grey glass composition employing in its colorant portion, in certain example embodiments, iron, cobalt, nickel, and at least one of erbium and titanium. The use of erbium and/or titanium has been found to improve coloration of the grey glass, and improve tunability of the same. In certain example embodiments,...

20060189473 - Optical glass, glass gob for press-molding, optical part, process for producing glass shaped material and process for producing optical part: An optical glass having a high light transmittance, a high refractive index and excellent production stability, which contains at least one of CaO and SrO together with SiO2, B2O3, La2O3, Nb2O5, TiO2 and BaO, having a composition that substantially contains, by weight %, 1 to 18% of SiO2, 3 to...

20060189474 - Alumina-boron carbide ceramics and methods of making and using the same: A ceramic body that contains between about 15 volume percent and about 35 volume percent of a boron carbide irregular-shaped phase and at least about 50 volume percent of alumina. The substrate has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m0.5....

20060183624 - High-purity quartz powder, process for producing the same, and glass molding: P

20060183622 - Optical synthetic quartz glass and method for producing the same: The present invention provides an optical synthetic quartz glass material which substantially does not cause changes in transmitted wave surface (TWS) by solarization, compaction (TWS delayed), rarefaction (TWS progressed) and photorefractive effect when ArF excimer laser irradiation is applied at a low energy density, e.g. at energy density per pulse...

20060183623 - Synthetic quartz glass for optical member and its production method: A synthetic quartz glass for an optical member to be used for an optical device employing a light having a wavelength of at most 400 nm and at least 170 nm as a light source, which contains substantially no oxygen excess defects, dissolved oxygen molecules nor reduction type defects, which...

20060183625 - Substrate for forming thin film, thin film substrate, optical wave guide, luminescent element and substrate for carrying luminescent element: It found out that a single crystal thin film which is excellent in crystallinity and comprises as the main ingredients at least one of more materials selected from a gallium nitride, an indium nitride, and an aluminum nitride can form on a substrate of a sintered compact which comprises as...

20060178254 - Infrared shielding material microparticle dispersion infrared shield, process for producing infrared shield material microparticle and infrared shielding material microparticle: To provide an infrared-shielding body sufficiently transmitting visible rays, having no half-mirror shaped appearance, requiring no large-scale apparatus when forming a film on a substrate, efficiently shutting invisible near-infrared rays with wavelength range of 780 nm or more, while eliminating a heat treatment at high temperature after film formation, and...

20060178255 - Blue glass composition: The present invention provides a blue glass that can be essentially free of selenium and cobalt but still has a blue color and desired luminous transmittance. Additionally, the amount of iron present is comparable to conventional soda-lime-silica glass. The glass of the present invention can have a soda-lime-silica glass base...

20060178256 - Siaion ceramic and method of making the same: A SiAlON ceramic body made from a starting powder mixture that includes silicon nitride powder and one or more powders that provide aluminum, oxygen, nitrogen, and two selected rare earth elements to the SiAlON ceramic body wherein the selected rare earth elements are selected from at least two groups of...

20060178257 - Alumina/zirconia ceramics and method of producing the same: Composite ceramics having a high strength, a high toughness and an excellent abrasion resistance, and a method of producing the same. The composite ceramics comprises 10 to 30 mass % of a zirconia crystal phase including Ce-stabilized zirconia crystal particles which contain CeO2 in an amount of 9 to 12...

20060178258 - Composition and method for making ceramic filters: The channel-plugging of porous ceramic honeycombs to provide wall flow filter bodies therefrom is carried out using water-based cements comprising ceramic powders and soluble alkali metal silicates; the cements form durable plugs that are resistant to thermal and chemical damage upon drying and without firing....

20060172875 - Low alkali sealing frits, and seals and devices utilizing such frits: A solid oxide fuel cell device incorporates a sealing material resistant to hydrogen gas permeation at a sealing temperature in the intermediate temperature range of 600° C.-900° C., the seal having a CTE in the 100×10−7/° C. to 120×10−7/° C., wherein the sealing material comprises in weight %, of: (i)...

20060172876 - Durable functional glass enamel coating for antomotive applications: The present invention provides glass compositions and glass coatings that are lead-free and cadmium-free for use on glass substrates, particularly in automotive applications. The compositions of the present invention provide for chemically durable, blacker colors that are completely suitable for use in automotive glass windows. The compositions include tantalum oxide...

20060172877 - Antimicrobial phosphate glass: The invention relates to an antimicrobial phosphate glass having the following composition in percent by weight on an oxide basis: P2O5>66-80 percent by weight; SO30-40 percent by weight; B203 0-1 percent by weight; Al2O3>6.2-10 percent by weight; SiO2 0-10 percent by weight; Na2O>9-20 percent by weight; CaO 0-25 percent by...

20060172878 - Low temperature sintering ceramic composition for high frequency, method of fabriacting the same and electronic component: A low temperature sintering ceramic composition can be sintered at 850 to 1,000° C., and the sintered ceramic has a low dielectric constant (9 or less at 16 Ghz or more) and a high Qf (10,000 or more). The composition can be co-sintered with wiring material containing Ag, Au, or...

20060172879 - Refractory product for a checker work element of a glass furnace regenerator: The invention relates to a melted and cast refractory product which is intended, for example, for a checker work element of a glass furnace regenerator, having the following average chemical weight composition, expressed in weight percent based on oxide content: 0.4%<MgO<2.5%; 0.2%<SIO2<2%; CaO<0.4%; impurities<0.5% AL2O3: complement....

20060172880 - Barium titanate and electronic parts using the material: A barium titanate, which is single crystal in the form of particles, said particles comprising particles without a void having a diameter of 1 nm or more in an amount of 20% or more by number of the total particles. A dielectric material comprising the barium titanate as well as...