A method of producing, from a continuous or discontinuous (e.g., chopped) carbon fiber, partially to fully converted metal carbide fibers. The method comprises reacting a carbon fiber material with at least one of a metal or metal oxide source material at a temperature greater than a melting temperature of the metal or metal oxide source material (e.g., where practical, at a temperature greater than the vaporization temperature of the metal or metal oxide source material). Additional methods, various forms of carbon fiber, metal carbide fibers, and articles including the metal carbide fibers are also disclosed.

A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may include a diamond table and a substrate. The diamond table may be attached to the substrate. The substrate may have a metric of being defined as a ratio of carbon content over tungsten carbide content, wherein the metric ranges from about 6.13% to about 7.5%.

Superabrasive compacts and methods of making superabrasive compacts are disclosed. A superabrasive compact includes a polycrystalline diamond table and a substrate attached to the polycrystalline diamond table. The substrate includes a hard metal carbide and a binder having a compound with a composition of A.sub.xB.sub.yC.sub.z, where A and B are transition metals, where C is carbon, and where 0≦x≦7, 0≦y≦7, x+y=7, and 0≦z≦3.

Provided are a composite material that has lower volume resistivity in comparison with SiC, SiC—Si, and the like, which are materials for forming constituent elements of an EHC, has low temperature dependence of volume resistivity, and thus is able to form a constituent element of a high-performance EHC; an electrode film, an electrode terminal, and a honeycomb substrate that are constituent elements of an EHC formed with such composite material, and a method for producing them. The composite material contains MoSi.sub.2 and at least one of Si or SiC, and is a material for forming a constituent element of an electrically heated catalytic converter. An electrode film 2, an electrode terminal 3, and a substrate 1 are produced from such composite material.

Disclosed herein are compounds, methods, and tools which comprise tungsten borides and mixed transition metal borides.

The present invention relates to an inorganic thermochromic additive for an inorganic ceramic coating composition, comprising a thermally colour-changeable yellow inorganic pigment, a thermally colour-changeable green inorganic pigment, and optionally a white inorganic pigment. It also relates to a thermally colour-changeable ceramic coating composition comprising the inorganic thermochromic additive and the inorganic ceramic coating composition. The present invention further provides a kit for preparing the thermally colour-changeable ceramic coating composition. The present invention further relates to an artefact, in particular a cookware item coated with the thermally colour-changeable ceramic coating composition, and to the use of the thermally colour-changeable ceramic coating composition for coating an artefact, in particular a cookware item.

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

The present invention relates to a method for manufacturing at least one monolithic inorganic porous support (1) having a porosity comprised between 10% and 60% and an average pore diameter ranging from 0.5 μm to 50 μm, using a 3D printer type machine (I) to build, in accordance with a 3D digital model, a manipulable three-dimensional raw structure (2) intended to form, after sintering, the monolithic inorganic porous support(s) (1).

A cutting tool comprises a rake face and a flank face, the cutting tool being composed of a substrate made of a cubic boron nitride sintered material and a coating provided on the substrate, the coating including a MAlN layer, the MAlN layer including crystal grains of M.sub.xAl.sub.1-xN in the cubic crystal system, n.sub.F<n.sub.R being satisfied, where n.sub.F represents a number of voids per 100 μm in length of the MAlN layer on the flank face in a cross section of the MAlN layer, and n.sub.R represents a number of voids per 100 μm in length of the MAlN layer on the rake face in a cross section of the MAlN layer, n.sub.D being 3 or less, where n.sub.D represents a number of droplets per 100 μm in length of the MAlN layer on the flank face in a cross section of the MAlN layer.

The disclosed materials, methods, and apparatus, provide novel ultra-high temperature materials (UHTM) in fibrous forms/structures; such “fibrous materials” can take various forms, such as individual filaments, short-shaped fiber, tows, ropes, wools, textiles, lattices, nano/microstructures, mesostructured materials, and sponge-like materials. At least four important classes of UHTM materials are disclosed in this invention: (1) carbon, doped-carbon and carbon alloy materials, (2) materials within the boron-carbon-nitride-X system, (3) materials within the silicon-carbon-nitride-X system, and (4) highly-refractory materials within the tantalum-hafnium-carbon-nitride-X and tantalum-hafnium-carbon-boron-nitride-X system. All of these material classes offer compounds/mixtures that melt or sublime at temperatures above 1800° C.—and in some cases are among the highest melting point materials known (exceeding 3000° C.). In many embodiments, the synthesis/fabrication is from gaseous, solid, semi-solid, liquid, critical, and supercritical precursor mixtures using one or more low molar mass precursor(s), in combination with one or more high molar mass precursor(s). Methods for controlling the growth, composition, and structures of UHTM materials through control of the thermal diffusion region are disclosed.