Compositions: ceramic inventions 10/06

20060240967 - Alkali resistant glass compositions: An alkali resistant glass composition having improved durability to withstand highly alkali environments at elevated temperatures, such as curing of cementitious products in an autoclave, is conveniently formed from economical and abundant materials. The glass composition includes increased levels of calcium and iron, and relatively low levels of alkali metals,...

20060240968 - Method for manufacturing optical glasses and coloured glasses at low temperatures: The invention relates to a method for manufacturing optical glasses and coloured glasses with the aid of a fluid phase sintering process from a basic material encompassing at least SiO2 powder as well as additives for reducing the temperature of the fluid phase sintering and/or melting process encompassing the following...

20060240969 - Composition for grey silica-sodium calcic glass for producing glazing: the NiO/CoO weight ratio being between 3.5 and 6 and the glass having an overall light transmission (TLD65) under illuminant D65 of between 20 and 60% measured for a thickness of 6 mm. The invention also relates to a glass sheet, optionally thermally toughened, obtained from the aforementioned composition and...

20060240970 - Glass compositions for the production of lead-free crystals: The invention refers to glass compositions for the production of lead-free crystals, having a density greater than 2.4 g/cm3, a refractory index of at least 1.51 and high resistance to chemical attack, characterized by comprising, by weight: from about 50% to about 75% of SiO2; from about 0.1% to about...

20060240971 - Method of making a siaion ceramic: A method of making a SiAlON ceramic body that includes a two phase composite comprising an alpha prime SiAlON phase and a beta prime SiAlON phase, the method includes the steps of: providing a starting powder that comprises at least about 70 weight percent silicon nitride powder and one or...

20060240972 - High dense sintered body of aluminum nitride, method for preparing the same and member for manufacturing semiconductor using the sintered body: The present invention provide a high dense aluminum nitride sintered body, a preparing method thereof, and a member for manufacturing semiconductor using the sintered body which has excellent leakage current characteristic, enough adsorbing property, good detachment property and excellent thermal conductivity and so can be applied to even a member...

20060240973 - Dielectric porcelain composition, multilayer ceramic capacitor, and electronic component: A dielectric ceramic composition of the present invention includes 100 parts by mole of BaTiO3, x1 parts by mole of MnO, x2 parts by mole of Cr2O3, x3 parts by mole of Y2O3 and/or Ho2O3, x4 parts by mole of oxide selected from the group consisting of BaO, CaO and...

20060234848 - Optical component of quartz glass, method for producing said component, and method for exposing a substrate: To provide an optical component of quartz glass for use in a projection lens system for immersion lithography with an operating wavelength below 250 nm, which is optimized for use with linearly polarized UV laser radiation and particularly with respect to compaction and birefringence induced by anisotropic density change, it...

20060234849 - Composition of glass for the production of glazing: A glass composition of the soda-lime-silicate type is described which includes, by weight, the following coloring agents: 0.2-0.45% of Fe2O3 (total iron), 2-8 ppm of Se, 0-20 ppm of CoO, and 0-80 ppm of NiO. The coloring agents satisfy the relationship, 0.7<(200×NiO)+(5000×Se)+(6×Fe3+)/(875×CoO)+(24×Fe2+)<1.6 in which the NiO, Se, Fe3+, CoO and...

20060234850 - Optical glass for precision press molding, preform for precission press molding, and process for the production thereof: A high-refractivity high-dispersion optical glass for producing an optical element, which requires no machining, such as polishing or lapping, of an optical-function surface after precision press molding, containing B2O3, SiO2, La2O3, Gd2O3, ZnO, Li2O, ZrO2 and Ta2O5 as essential components, containing 0 to 1 mol % of Sb2O3 as an...

20060234851 - Dielectric ceramic composition, method for producing the same, dielectric ceramic employing it and multilayer ceramic component: A dielectric ceramic composition having a relative dielectric constant εr of 15-25 allowing formation of a laminated ceramic part having an appropriate size, capable of being sintered at a temperature lower than 800-1000° C. allowing incorporation and lamination of low resistance conductor of Cu or Ag through simultaneous sintering, and...

20060234852 - High k-gate oxide tfts built on transparent glass or transparent flexible polymer substrate: A transparent thin film transistor device includes a transparent substrate, and a high dielectric constant insulator layer disposed over the transparent substrate at a defined temperature. A transparent semiconductor layer is disposed over the insulator layer....

20060234854 - Dielectric porcelain composition and electronic part: A dielectric ceramic composition comprising a main component including a dielectric oxide expressed by a composition formula of {(Ca1-x Mex)O}m·(Zr1-y Tiy)O2, wherein “Me” indicating an element name in the composition formula is at least one of Sr, Mg and Ba, and “m”, “x” and “y” indicating composition mole ratios in...

20060234853 - Dielectric porcelain composition, electronic device and methods for producing these: A dielectric ceramic composition, comprising a main component including at least a dielectric oxide having a composition expressed by [(CaxSr1-x)O]m[(TiyZr1-y-zHfz)O2], a first subcomponent including a Mn oxide and/or an Al oxide and a glass component, wherein “m”, “x”, “y” and “z” indicating composition mole ratios in the formula included in...

20060229186 - Optical glass: An optical glass having a refractive index (nd) and an Abbe number (νd) which are within an area surrounded by the straight lines which are drawn by connecting point A (nd=1.835, νd=46.5), point B (nd=1.90, νd=40.0), point C, (nd=1.90, νd=35.0) and point D (nd=1.835, νd=38.0) in a sequence of A,...

20060229187 - Compositions for high power piezoelectric ceramics: A class of ceramic compositions according to the formula Pb(1-z)Mz(Mn1/3Sb2/3)x(ZryTi1-y)1-xO3 where M is selected to be either Sr or Ba, x is selected to be between 0.01 and 0.1, y is selected to be between 0.35 and 0.55, and z is selected to be between 0.01 and 0.10. In some...

20060229188 - C0g multi-layered ceramic capacitor: wherein: A is a transition metal oxide; E is an oxide of a group III or IV element; G is an oxide of a group II element; H is an oxide of a lanthanide; t is 0.50 to 0.90; v is 0.8 to 1.0; s is 0.0001 to 0.08; x...

20060223688 - Vitreous compositions of the vitroceramic type, transparent to infrared: The invention relates to vitreous compositions, in particular of the vitroceramic type, transparent to infrared, production and uses thereof. Said compositions comprise in mol. %: Ge 5-40, Ga<1, S+Se 40-85, Sb+As 4-40, MX 2-25, Ln 0-6, adjuncts 0-30, where M=at least one alkaline metal, selected from Rb, Cs, Na, K...

20060223689 - Optical glass, press-molding preform, process for the production thereof, optical element and process for the production thereof: e

20060223690 - Photosensitive thick-film dielectric paste composition and method for making an insulating layer using same: Disclosed is a photosensitive thick-film dielectric paste composition that includes a glass frit having a glass softening point not lower than 0° to 40° C. below a firing temperature ranging above 450° C. and up to 600° C.; an organic polymer binder; a photoinitiator; a photocurable monomer; and an organic...

20060223691 - Freestanding films with electric field-enhanced piezoelectric coefficients: A method to produce low-temperature sinterable powders which are then subsequently used to fabricate freestanding piezoelectric films with very large electric-field-enhanced piezoelectric response is provided. The −d31 coefficient for PMN-PT layers can be as high as 2000 pm/V, larger than that of commercial single crystalline PMN-PT bulk materials, at 10...

20060223692 - Electronic device, dielectric ceramic composition and the production method: A dielectric ceramic composition comprising a main component including barium titanate and an oxide of Al, wherein the dielectric ceramic composition includes a plurality of dielectric particles, concentration of Al in each of the dielectric particles becomes lower from a particle surface to inside thereof, and each of the dielectric...