A sintered composite ceramic, includes: a lithium-garnet major phase; and a lithium dendrite growth inhibitor minor phase, such that the lithium dendrite growth inhibitor minor phase has a Li-metal oxide in a range of >0-10 wt. % based on the total weight of the sintered composite ceramic.

A porous refractory article including greater than 90 wt % coal combustion fly ash. The coal combustion fly ash is in the form of an interconnected particulate lattice structure, and wherein greater than 50% by volume of the coal combustion fly ash particles within the particulate lattice structure have a particle size of greater than 150 μm. The article has: (a) an apparent porosity of from 30% to 50%, (b) a porosity such that the maximum pore size is less than 500 μm; (c) a cold crushing strength of at least 4.0 MPa; and (d) a thermal conductivity of less than 1.5 W/(m.Math.K).

A cutting tool including a substrate and a coating film disposed on the substrate, wherein the cutting tool includes: a rake face; a flank face contiguous to the rake face; and a cutting edge region composed of a boundary part between the rake face and the flank face, wherein the coating film includes a TiSiCN layer, the TiSiCN layer has: a first TiSiCN layer positioned in the rake face; and a second TiSiCN layer positioned in the cutting edge region, the first TiSiCN layer has a composition of Ti.sub.(1-Xr)Si.sub.XrCN, the second TiSiCN layer has a composition of Ti.sub.(1-Xe)Si.sub.XeCN, and the Xr and the Xe each represent 0.010 or more and 0.100 or less, and satisfy a relationship of Xe-Xr≥0.003.

A cubic boron nitride sintered material comprises cubic boron nitride particles and a binding phase. The binding phase includes a first region and a second region. The first region accounts for 1.0 vol % or more in the binding phase. The first region includes a plurality of needle crystals. Each of the plurality of needle crystals includes a boride. Each of the plurality of needle crystals has an aspect ratio of 1.5 or more in a cross-section image of the cubic boron nitride sintered material.

Provided is a compact of a powder satisfying requirements 1 to 3. Requirement 1: |dA(T)/dT| of the powder is 10 ppm/° C. or more at least at −200 to 1,200° C., where A is (a lattice constant of a-axis)/(a lattice constant of c-axis) obtained from X-ray diffractometry. Requirement 2: the powder contains at least one metal or semimetal element, and the element is composed of only an element selected from the group consisting of Li, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, Hf, Ta, W, Re, Au, Hg, Tl, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. Requirement 3: the linear thermal expansion coefficient at −200 to 1,200° C. of the compact is negative at least at one temperature.

The invention relates to a batch composition for producing a refractory product, a method for producing a refractory product, a refractory product, and to the use of a synthetic raw material.

A super hard polycrystalline construction is disclosed as comprising a body of super hard material bonded to a substrate. The body of super hard material comprises an outer peripheral region formed of interbonded grains of super hard material extending peripherally around one or more inner regions, the outer peripheral region having a radial thickness proportional to the square of the ratio of the fracture toughness of the material forming said outer peripheral region to the transverse rupture strength of the material forming said outer peripheral region (K.sub.IC/TRS).sup.2 where TRS is the transverse rupture strength and K.sub.IC is the fracture toughness.

The present invention relates to a light-transmitting ceramic sintered body which contains air voids having pore diameters of 1 μm or more but less than 5 μm at a density within the range of from 10 voids/mm.sup.3 to 4,000 voids/mm.sup.3 (inclusive), while having a closed porosity of from 0.01% by volume to 1.05% by volume (inclusive). With respect to this light-transmitting ceramic sintered body, a test piece having a thickness of 1.90 mm has an average transmittance of 70% or more in the visible spectrum wavelength range of 500-900 nm, and the test piece having a thickness of 1.90 mm has a sharpness of 60% or more at a comb width of 0.5 mm.

Disclosed are a carbon fiber reinforced ceramic atomizing core and a preparation method thereof. The carbon fiber reinforced ceramic atomizing core includes, by mass, the following raw materials: 30-70 parts of ceramic powder, 1-10 parts of carbon fibers, 10-50 parts of a sintering aid, and 0-30 parts of a pore former. By adding carbon fibers to the carbon fiber reinforced ceramic atomizing core, the atomizing core has columnar pores, which are similar to straight pores formed by fiber stacking of cotton cores, such that the oil conduction capacity and oil retention capacity of the atomizing core are improved, and the atomizing effect and taste of the atomizing core are also improved; and the carbon fibers can be bridged around the pores, thus improving the tenacity and strength of the atomizing core.

Methods and apparatus for plasma chamber target for reducing defects in workpiece during dielectric sputtering are provided. For example, a dielectric sputter deposition target can comprise a dielectric compound having a predefined average grain size ranging from approximately 65 μm to 500 μm, wherein the dielectric compound is at least one of magnesium oxide or aluminum oxide.