A wiring substrate includes an insulating substrate, a conductor and an Ni film. The insulating substrate has a first surface and a second surface on a side opposite the first surface, and contains AlN. The conductor is disposed on the first surface and contains Cu. The Ni film is disposed so as to extend across an upper surface and a side surface of the conductor to the first surface. Ti oxide is scattered so as to be at a plurality of points on the first surface.

A wiring substrate includes an insulating substrate, a conductor and an Ni film. The insulating substrate has a first surface and a second surface on a side opposite the first surface, and contains AlN. The conductor is disposed on the first surface and contains Cu. The Ni film is disposed so as to extend across an upper surface and a side surface of the conductor to the first surface. Ti oxide is scattered so as to be at a plurality of points on the first surface.

A ceramic ink for digital printing, preferably for inkjet printing, comprises at least one solid part comprising at least one ceramic pigment or dye; and at least one liquid part into which said ceramic pigment or dye is dispersed and comprising one or more vehicles and/or one or more dispersants; wherein at least one of either the one or more vehicles or the one or more dispersants comprises one or more organic or inorganic silicon compounds.

A ceramic ink for digital printing, preferably for inkjet printing, comprises at least one solid part comprising at least one ceramic pigment or dye; and at least one liquid part into which said ceramic pigment or dye is dispersed and comprising one or more vehicles and/or one or more dispersants; wherein at least one of either the one or more vehicles or the one or more dispersants comprises one or more organic or inorganic silicon compounds.

A method for producing silicon-containing oxide-coated aluminum nitride particles including aluminum nitride particles and a silicon-containing oxide coating covering a surface of each of the aluminum nitride particles. The method includes a first step including mixing aluminum nitride particles and an organic silicone compound solution in which an organic silicone compound containing a specific structure is dissolved in a solvent to form a mixture and then heating the mixture to remove the solvent and to obtain aluminum nitride particles coated with the organic silicone compound; and a second step including heating the aluminum nitride particles coated with the organic silicone compound at a temperature of 300° C. or more and 1,000° C. or less.

A method for producing silicon-containing oxide-coated aluminum nitride particles including aluminum nitride particles and a silicon-containing oxide coating covering a surface of each of the aluminum nitride particles. The method includes a first step including mixing aluminum nitride particles and an organic silicone compound solution in which an organic silicone compound containing a specific structure is dissolved in a solvent to form a mixture and then heating the mixture to remove the solvent and to obtain aluminum nitride particles coated with the organic silicone compound; and a second step including heating the aluminum nitride particles coated with the organic silicone compound at a temperature of 300° C. or more and 1,000° C. or less.

The invention relates to a colouring composition, preferably an ink for ink jet printing, comprising: (A) 3.0-15.0% by weight of Ti in the form of a titanium compound obtained by a process comprising: (i) reacting at least one titanium alkoxide with water and, optionally, at least one alcohol, thereby obtaining a reaction mixture; (ii) adding glycolic acid in a Ti:acid molar ratio comprised between 1:0.8 and 1:2.0, thereby generating a mixture of water and alcohol comprising an intermediate titanium compound; (iii) optionally, but preferably, removing part of the mixture comprising water and alcohol; (iv) adding at least one compound of formula N(R2).sub.3 with a Ti:N(R2).sub.3 molar ratio comprised between 1:0.20 and 1:1.50; and (v) completely eliminating the alcohol; (B) 0.2-2.5% by weight of Cr and/or Ni in the form of at least one water-soluble organic compound of Cr and/or Ni; (C) up to 100% by weight of at least one solvent selected from the group consisting of water, organic solvents miscible with water and mixtures thereof, wherein the quantities (A), (B) and (C) refer to the overall weight of the colouring composition.

A method of producing a ceramic matrix composite including a protective ceramic coating thereon comprises applying a surface slurry onto an outer surface of an impregnated fiber preform. The surface slurry includes particulate ceramic solids dispersed in a flowable preceramic polymer comprising silicon, and the impregnated fiber preform comprises a framework of ceramic fibers loaded with particulate matter. The flowable preceramic polymer is cured, thereby forming on the outer surface a composite layer comprising a cured preceramic polymer with the particulate ceramic solids dispersed therein. The cured preceramic polymer is then pyrolyzed to form a porous ceramic layer comprising silicon carbide, and the impregnated fiber preform and the porous ceramic layer are infiltrated with a molten material comprising silicon. After infiltration, the molten material is cooled to form a ceramic matrix composite body with a protective ceramic coating thereon.

A method of producing a ceramic matrix composite including a protective ceramic coating thereon comprises applying a surface slurry onto an outer surface of an impregnated fiber preform. The surface slurry includes particulate ceramic solids dispersed in a flowable preceramic polymer comprising silicon, and the impregnated fiber preform comprises a framework of ceramic fibers loaded with particulate matter. The flowable preceramic polymer is cured, thereby forming on the outer surface a composite layer comprising a cured preceramic polymer with the particulate ceramic solids dispersed therein. The cured preceramic polymer is then pyrolyzed to form a porous ceramic layer comprising silicon carbide, and the impregnated fiber preform and the porous ceramic layer are infiltrated with a molten material comprising silicon. After infiltration, the molten material is cooled to form a ceramic matrix composite body with a protective ceramic coating thereon.

A method for manufacturing a part made of composite material in which an adhesion promoter is grafted to a coating present on the fibre surface as well as to a ceramic precursor resin. Afterwards, a ceramic matrix phase is formed in the porosity of the fibre preform by pyrolysis of the polymerised resin.