The present invention provides a means that can improve density and mechanical strength in a sintered body of a composition containing a sintering aid and a silicon carbide particle, and a molded article containing the sintered body. The present invention relates to a coated silicon carbide particle powder containing a silicon carbide particle, and a coating layer coating the silicon carbide particle, in which the coating layer contains an aluminum element, and the mass of the aluminum element per unit surface area of the silicon carbide particle is 0.5 mg/m.sup.2 or more.

Hybrid particles having improved electrical conductivity and thermal and chemical stabilities are disclosed. The hybrid particles are for use in conductive pastes. The hybrid particles include a nanoparticle selected from a graphene-containing material, a dichalcogenide material, a conducting polymer, or a combination thereof encapsulated in a conducting metal. The hybrid particles include a nanoparticle selected from a graphene-containing material, a dichalcogenide material, or a combination thereof encapsulated in a conducting polymer, and optionally further in a conducting metal. Suitable conducting metals include nickel or silver. Suitable conducting polymers include polyaniline, polypyrrole, or polythiophene. Suitable dichalcogenide materials include MoS.sub.2 or MoSe.sub.2. The hybrid particles can further include a conducting polymer layer on an outer surface of the conducting metal. Methods of making the hybrid particles are also disclosed.

Silicon particles with a reduced and/or delayed propensity to generate hydrogen gas by reaction with water in aqueous inks for preparing lithium ion battery anodes are prepared by milling silicon, preferably in an oxidative atmosphere, followed by heat treating at an elevated temperature in vacuum or an inert atmosphere.

A coating composition includes a binder component (A), a flake-like aluminum pigment (B) having an average particle diameter (d50) of 18 μm to 25 μm, and a flake-like pigment (C) being a flake-like pigment other than flake-like aluminum pigments and having an average particle diameter (d50) of 8 μm to 30 μm. A content of the flake-like aluminum pigment (B) is 10 parts by mass to 50 parts by mass and a content of the flake-like pigment (C) is 0.5 parts by mass to 10 parts by mass, based on 100 parts by mass of the binder component (A). A content ratio (B)/(C) of the flake-like aluminum pigment (B) to the flake-like pigment (C) is 2/1 to 50/1 in terms of a solid content mass ratio.

Method for manufacturing a composite material combining a metal oxide or metalloid based matrix suited for allowing light to pass, and a mineral pigment dispersed in the matrix, the method comprising a step of mixing the mineral pigment in powder form with the matrix in powder form, and a step of sintering of the mixture under sufficient pressure such that the densification temperature of the matrix under said pressure is below the breakdown temperature of the mineral pigment, where the sintering temperature is greater than or equal to the densification temperature of the matrix and below the breakdown temperature of the mineral pigment.

A conductive coating material is disclosed including at least (A) 100 parts by mass of a binder component including 5 to 30 parts by mass of solid epoxy resin that is solid at normal temperature and 20 to 90 parts by mass of liquid epoxy resin that is liquid at normal temperature, (B) 200 to 1800 parts by mass of silver-coated copper alloy particles in which the copper alloy particles are made of an alloy of copper, nickel, and zinc, the silver-coated copper alloy particles have a nickel content of 0.5% to 20% by mass, and the silver-coated copper alloy particles have a zinc content of 1% to 20% by mass with respect to 100 parts by mass of the binder component (A), and (C) 0.3 to 40 parts by mass of a curing agent with respect to 100 parts by mass of the binder component (A).

The present invention relates to a technology for producing a black pearlescent pigment for cosmetics which is a human-friendly and nature-friendly by using a pigment including natural charcoal powder. The production method of the pearlescent pigment using natural charcoal according to the present invention includes (a) milling natural charcoal to produce a pigment including natural charcoal powder; and (b) coating a flake substrate with the produced pigment including the natural charcoal powder, wherein the milling is performed at 20 to 40 Hz for 24 to 72 hours, and an average particle size of the pigment including the natural charcoal powder is 100 to 300 nm.

The present invention relates to a technology for producing a black pearlescent pigment for cosmetics which is a human-friendly and nature-friendly by using a pigment including natural charcoal powder. The production method of the pearlescent pigment using natural charcoal according to the present invention includes (a) milling natural charcoal to produce a pigment including natural charcoal powder; and (b) coating a flake substrate with the produced pigment including the natural charcoal powder, wherein the milling is performed at 20 to 40 Hz for 24 to 72 hours, and an average particle size of the pigment including the natural charcoal powder is 100 to 300 nm.

Process for the surface treatment of a titanium dioxide pigment, characterized in that it comprises the following steps: an aqueous suspension of titanium dioxide pigments is formed, in a first step, a layer of alumina phosphate is precipitated on the surface of the pigment, in a second step, a layer of alumina is precipitated over the first layer of alumina phosphate, and in a third step, a layer of magnesium oxide and alumina is precipitated on the layer of alumina. Also included are titanium dioxide pigments made by the disclosed process and method using said pigments in paper manufacturing.

A copper oxide coated pigment including a particle having an outer surface, and a layer of copper oxide on the outer surface. The pigment has a reflectivity of electromagnetic radiation in a visible spectrum less than or equal to 5%, and a reflectivity of electromagnetic radiation in a near-IR and LiDAR spectrum greater than or equal to 5%. The particle is cobalt oxide or carbon black. A method for forming copper oxide coated particles includes combining a precipitating agent with a solution of copper nitrate and particles, forming coated particles. The particles are cobalt oxide or carbon black. Washing the particles, obtaining washed coated particles, and filtering the washed coated particles, obtaining filtered coated particles. Drying the filtered coated particles, obtaining dried coated particles, and calcining the dried coated particles to form the copper oxide coated particles.