Abstract: A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.

Abstract: Oxalic acid is employed in a precursor mixture containing at least one milled alpha alumina powder having a particle size of 0.1 to 6 microns, boehmite powder that functions as a binder of the alpha alumina powders, and at least one burnout material having a particle size of 1-10 microns to provide a porous body having enhanced pore architecture in which extrusion cracks can be reduced. The presence of oxalic acid in such as precursor mixture can reduce and even eliminate NOx emission during a high temperature heat treatment process.

Abstract: Composite materials are provided which include a glass-ceramic matrix composition that is lightly crystallized, a fiber reinforcement within the glass-ceramic matrix composition which remains stable at temperatures greater than 1400° C., and an interphase coating formed on the fiber reinforcement. A method of making a composite material is also provided, which includes applying heat and pressure to a shape including fiber reinforcements and glass particles. The heat and pressure lightly crystallize a matrix material formed by the heat and pressure on the glass particles, forming a thermally stable composite material.

Abstract: A sintered material includes cubic boron nitride grains and a binder, a grain size D50 of the cubic boron nitride grains when a cumulative value of the cubic boron nitride grains is 50% in an area-based grain size distribution being more than 0.5 ?m and less than or equal to 5 ?m, more than or equal to 70 volume % and less than or equal to 98 volume % of the cubic boron nitride grains being included in the sintered material, the binder being composed of A1-xCrxN, where 0?x?1, and a remainder, the remainder being composed of at least one of a first element and a compound including the first element and a second element, the first element being one or more elements selected from a group consisting of W, Co, Ni, Mo, Al, and Cr, the second element being one or more elements selected from a group consisting of nitrogen, carbon, oxygen, and boron.

Abstract: An oxide sintered body is provided which does not splash from the target surface even at the time of high power film formation, has a high film formation rate, and is used in a sputtering target capable of providing a high-refractive-index film. An oxide sintered body is used which contains zinc, niobium, aluminum and oxygen as constituent elements and in which Nb/(Zn+Nb+Al)=0.076 to 0.289 and Al/(Zn+Nb+Al)=0.006 to 0.031, where Zn, Nb and Al denote contents of zinc, niobium and aluminum, respectively.

Abstract: Articles and methods of making and using the articles are provided. The articles include inorganic agglomerates having an average dimension in a range from about 50 microns to about 2 mm. The porous agglomerates each include a network of carbon or silica, and metal oxide particles embedded in the network. Some agglomerates are capable of lowering a resonant frequency of an acoustic device when the resonant frequency is in a range from about 50 Hz to about 1500 Hz.

Abstract: A pink aluminosilicate glass, comprising: a glass former, a network intermediate oxide, a network modifier oxide, a network former oxide, a network modifier, a colorant and a clarificant, wherein the glass former is SiO2, the network modifier oxide is CaO, MgO, K2O and Na2O, the network former oxide is B2O3, and the network modifier is ZrO2 and SrO. This glass is pink in visible light, has a good visual effect, and has a relatively high thermal stability, and can improve the usage safety in harsh working environments.

Abstract: A method for enhancing optical properties of sintered, zirconia ceramic bodies and zirconia ceramic dental restorations is provided. The porous or pre-sintered stage of a ceramic body is treated with two different yttrium-containing compositions and sintered, resulting in sintered ceramic bodies having enhanced optical properties. The enhanced optical properties may be substantially permanent, remaining for the useful life of the sintered ceramic body.

Abstract: A method of fabricating a part out of ceramic matrix composite material, the method including infiltrating a fiber preform with a molten composition including a majority by weight of silicon, the fiber preform including silicon carbide fibers, silicon carbide powder being present in the pores of said preform, a mean size of silicon carbide crystallites in the powder being less than the mean size of the silicon carbide crystallites in the fibers, a ceramic matrix being formed in the pores of the fiber preform during the infiltration so as to obtain the part made of composite material.

Abstract: The present invention relates to a synthetic clay composition which does not harden and thus can be repeatedly shaped without water while maintaining the shape for a long time and, particularly, to a novel synthetic clay composition and a method for preparing the same. The synthetic clay composition is soluble in water, and thus can be easily washed and is highly safe for the human body. Further, the synthetic clay composition is light and can be repeatedly newly shaped as desired. In addition, the synthetic clay composition has an excellent ability to maintain a shape, and thus can maintain the same shape in an agglomerated form for a long time, and can be used for play such as throwing.

Abstract: Provided is a super low melting SnO—SnF2—P2O5-based glass frit for which the firing temperature can be set to 200° C. or less and which has high water resistance and transparency. The fluorinated tin-based glass frit includes, in mol %, 30 to 70% of SnF2, 10 to 30% of P2O5, 10 to 40% of SnO, 0.1 to 10% of SnO2, 0 to 5% of In2O3, 0 to 5% of B2O3, and 0 to 5% of SiO2, and has a glass transition point of 160° C. or lower, a softening point of 180° C. or lower, and a maximum particle size of 100 ?m or less. The fluorinated tin-based glass frit has a visible light transmission rate of 80% or more at 200° C. and a thickness of 0.6 mm of a fired product thereof, and a rate of volume reduction of the fired product due to soaking in hot water at 85° C. for 24 hours is 2 vol. % or less.

Abstract: Nanocomposite silicon and carbon compositions. These compositions can be made from polymer derived ceramics, and in particular, polysilocarb precursors. The nanocomposite can have non-voids or be nano-void free and can form larger macro-structures and macro-composite structures. The nanocomposite can contain free carbon domains in an amorphous SiOC matrix.

Abstract: A window pane for an interceptor missile includes a light transmissive base material and light transmissive additive particles dispersed within a thickness of the light transmissive base material so as to define stress nodes, the stress nodes localizing, upon applied thermal shock or thermal heating, crack propagation around each stress node and/or between two or more adjacent stress nodes and preventing a continuous crack propagation through any one of a length, a width and a thickness of the window pane.

Abstract: A sintered material includes cubic boron nitride grains and a binder, a grain size D50 of the cubic boron nitride grains when a cumulative value of the cubic boron nitride grains is 50% in an area-based grain size distribution being more than 0.5 ?m and less than or equal to 5 ?m, more than or equal to 70 volume % and less than or equal to 98 volume % of the cubic boron nitride grains being included in the sintered material, the binder being composed of A1-xCrxN, where 0?x?1, and a remainder, the remainder being composed of at least one of a first element and a compound including the first element and a second element, the first element being one or more elements selected from a group consisting of W, Co, Ni, Mo, Al, and Cr, the second element being one or more elements selected from a group consisting of nitrogen, carbon, oxygen, and boron.

Abstract: A method for recovering valuable metals and simultaneously preparing ceramsite by roasting cyanide tailing belongs to the area of comprehensive recovery and high value utilization of metallurgical waste residue. In this method, cyanide tailings, bentonite, calcium chloride, coal powder and albite are mixed by ball milling according to certain weight ratio to get a mixture. After drying and roasting twice, dust is collected from the roasted ash, the obtained polymetallic ash is collected and treated. The secondary calcined material is cooled to obtain ceramsite. The invention volatilizes and recovers the valuable metal in the roasting and sintering process of cyanide tailings and directly prepares the ceramsite through reasonable batching, which achieves the effect of recycling cyanide tailings and high-value utilization, can create good economic and environmental benefits, and has significant effect of energy saving and consumption reduction.

Abstract: The invention relates to a lithium silicate glass ceramic which contains lithium silicate as main crystal phase and scheelite and/or powellite as further crystal phases. The invention also relates to a corresponding starting glass, a starting glass with nuclei, a process for producing the glass ceramic and the starting glasses as well as the use thereof.

Abstract: The invention relates to a refractory ceramic product.

Abstract: A dielectric porcelain composition having a main component a perovskite compound represented by ABO3, and the perovskite compound at least contains Ti and a volatile element which forms a solid solution at a B site, and may also contain Zr. The dielectric porcelain composition contains the volatile element in an amount larger than 0 part by mol and less than or equal to 0.2 part by mol with respect to 100 parts by mol of a total of the Ti and the Zr, and has a ratio of an A-site element to the total of the Ti and the Zr of 1.00 or more and 1.04 or less as a molar ratio.

Abstract: The invention relates to a process for the preparation of a quartz glass grain comprising the process steps i.) Providing a silicon dioxide granulate from a pyrogenically produced silicon dioxide powder, ii.) Making a glass melt out of silicon dioxide granulate, iii.) Making a quartz glass body out of at least part of the glass melt and iv.) Reducing the size of the quartz glass body to obtain the quartz glass grain. The invention further relates to a quartz glass grain which is obtainable by this process. The invention further relates to opaque quartz glass bodies, which are obtainable by further processing of the quartz glass grain.

Abstract: Zirconia dental ceramics exhibiting opalescence and having a grain size in the range of 10 nm to 300 nm, a density of at least 99.5% of theoretical density, a visible light transmittance at or higher than 45% at 560 nm, and a strength of at least 800 MPa.