Abstract: The object of the present invention is to provide an absorber glass for FOP having a broad absorption band which extends from ultraviolet region through visible region to near infrared region. The absorber glass of the present invention contains FeO, 18 to 40% by weight of SiO.sub.2 and not less than 20% by weight of FeO and Fe.sub.2 O.sub.3 in total.

Abstract: A ceramic article containing a core/bulk comprising tetragonal zirconia or tetragonal zirconia and alumina composite wherein zirconia is preferably doped with yttria, and a shell/surface comprising zirconium boride.

Abstract: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide is the oxidant.

Abstract: A crystalline low-aluminum boron beta zeolite is used for dewaxing hydrocarbonaceous feeds.

Abstract: A titanosilicate catalyst and method for preparing the same, comprising primary titanosilicate particles which are combined with one another, wherein the titanosilicate catalyst comprises pores having a pore diameter of from 50 to 300 .ANG.. The inventive catalyst exhibits activity in a hydroxylation reaction of an aromatic compound, or an epoxidation reaction of an olefin, or an ammoximation reaction of a ketone using hydrogen peroxide as an oxidant.

Abstract: The production and physiological dissolution rate of mineral wool formed of MMV fibers containing 35-66% SiO.sub.2, up to 10% A1.sub.2 O.sub.3, 10-45% CaO, 2-30% MgO, up to 10% FeO, 0-7% Na.sub.2 O+K.sub.2 O and 0-10% TiO.sub.2 is improved by including both P.sub.2 O.sub.5 and B.sub.2 O.sub.3 in the composition.

Abstract: A cubic system boron nitride sintered body for a cutting tool, which is a cubic system boron nitride sintered body having a purity of at least 99 wt % obtained by a direct conversion method, wherein the average size of primary crystal grains constructing the sintered body is at most 3.0 .mu.m.

Abstract: A process for producing a titanium-containing zeolite such as TS-1 titanium silicalite is disclosed. A precursor mixture comprising a silica source such as tetraalkylorthosilicate, a titanium source such as titanium alkoxide, a growth medium comprising a nitrogen-containing organic base such as an amine, a fluoride-containing mineralizing agent such as hydrogen fluoride, and an optional organic solvent, is formed then heated to yield the titanium-containing zeolite as solid crystals. A controlled amount of water may be present in the growth medium. The process is capable of providing good yields of high purity zeolites containing framework titanium atoms even in the absence of a quaternary ammonium salt.

Abstract: Electrically conductive ceramic composite articles comprising tetragonal zirconia or a composite of zirconia-alumina and zirconium diboride.

Abstract: Several new and useful compositions of rare earth oxides and mixtures of rare earth oxides are made into strong flexible fibrous textiles and strands. By varying the mixtures of rare earth metal oxides that make up the textiles and strands, the emission spectra can be matched to the absorption spectra of a variety of semiconductor photovoltaic cells. Furthermore, the addition of between 1-10 mol % of thorium oxide to the rare earth metal oxide fibers inhibits microcrystalline grain growth at high temperatures.

Abstract: A hermetic sealing composition comprising 100 parts by weight of a basic composition consisting of from 80 to 99.9 wt % of a crystalline low melting glass powder containing lead and boron and from 0.1 to 20 wt % of a low expansion ceramic filler, and from 0.001 to 1.0 part by weight, in total, of at least one of an .alpha.-4PbO.B.sub.2 O.sub.3 crystal powder and a Pb.sub.3 O.sub.4 powder, incorporated to the basic composition, the thermal expansion coefficient of the sealing composition after firing being from 80.times.10.sup.-7 to 105.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C.

Abstract: A transparent glass exhibiting a light pink color, the glass, as analyzed, consisting essentially of 12-34 ppm selenium in conjunction with a co-colorant selected from a group consisting of 1.5-7 ppm cobalt oxide calculated as Co.sub.3 O.sub.4 and 500-700 ppm neodymium oxide in a soda lime silicate base glass that contains as impurities no more than about 700 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.

Abstract: A high purity .alpha.-tricalcium phosphate ceramic having a superior biocompatibility for use mainly as a bone filler, is produced by shaping a powder material formed by a wet method, followed by sintering it and then cooling at a predetermined rate.

Abstract: A ceramic article containing a core comprising zirconia and ZrB.sub.2 composite wherein zirconia is preferably doped with yttria, and a shell comprising zirconium nitride.

Abstract: A transparent glass exhibiting a blue color, the glass, as analyzed, consisting essentially of 100-250 ppm copper oxide in conjunction with a co-colorant of 5-15 ppm cobalt oxide, calculated as Co.sub.3 O.sub.4, in a soda lime silicate base glass that contains as impurities no more than 500 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.

Abstract: Hard disk drive components, such as, sliders, load beams, support arms, actuators, actuator bearings, spacers, clamps, spindles, ball bearings, thrust bearings, journal bearings, base plates, housings, and covers, formed of a multi-phase ceramic-based material. One method of making the hard disk drive components includes (a) forming a porous body of ceramic; (b) infiltrating a liquid into the pores of the ceramic body; (c) solidifying the infiltrated liquid; and (d) machining the metal-infiltrated ceramic body to form the hard disk drive component.

Abstract: A ceramic powder mixture is made by combining from 96 to 98 mole percent of precursors of a stoichiometric barium zirconate titanate (BZT) wherein zirconium amounts to from 13.5 to 15.0 mole percent, and adding from 0.5 to 1.5 mole percent niobium or lanthanum, from 1.2 to 2.6 weight percent of a cadmium silicate sintering flux, essentially no lead, and from zero to 2 mole % of an alkaline earth metal to obtain in the powder mixture a ratio (A/B) of the large cations (A) to the small cations (B) in the range from 1.024 to 1.035. The mixture is calcined to obtain a powder comprised of agglomerates of essentially identical composition within the ranges given above. This powder of agglomerates may then be formed into a compact body that is sintered and fired to maturity at 1100.degree. C. to produce a mature dielectric ceramic body meeting the Y5V standard and having a dielectric constant greater than 10,000 at the Curie temperature.

Abstract: A transparent glass exhibiting a light green color, the glass, as analyzed, consisting essentially of 40-200 ppm chromium oxide in a soda lime silicate base glass that contains as impurities no more than about 400 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.

Abstract: Proposed is a grain boundary-free crystalline body of a perovskite structure having a chemical composition of the formula Pr.sub.1-x M.sub.x MnO.sub.3, in which M is calcium or strontium and the subscript x is a number of 0.3 to 0.5, which exhibits a magnetoresistance behavior with a phase transition between an insulator phase and a ferromagnetic metallic phase accompanied by the phenomenon of hysteresis. This grain boundary-free crystalline body can be obtained by subjecting a sintered body of a powder blend consisting of the oxides of praseodymium, manganese and calcium or strontium to a crystal growing treatment by the floating zone-melting method in an atmosphere of oxygen.

Abstract: A composition for soda-lime-silica glass intended for the production of panes, which comprises, in percentages by weight:______________________________________ SiO.sub.2 69 to 75% Al.sub.2 O.sub.3 0 to 3% B.sub.2 O.sub.3 0.5% CaO 2 to 10% MgO < to 2% Na.sub.2 O 9 to 17% K.sub.2 O 0 to 8% Se 0 to 0.002% CoO 0 to 0.001% Cr.sub.2 O.sub.3 0 to 0.001% with 0.02% < Fe.sub.2 O.sub.3 (total) < 0.2%. ______________________________________This composition may further comprise fluorine, oxides of zinc and zirconium and less than 4% of barium oxide, the total of the percentages of the alkaline earth oxides remaining equal to or less than 10%. The panes made from such glasses are particularly well adapted for architectural applications.