Through the plasma spraying technology and the cold spraying high-speed deposition technology, an evenly distributed protective coating is formed on the surface of a plasma etching chamber. The protective coating, having a double-layer composite structure, includes a metal+Y.sub.2O.sub.3 coating as a metal+Y.sub.2O.sub.3 transition layer deposited by plasma spraying as a lower layer of the double-layer composite structure, and a high-purity Y.sub.2O.sub.3 ceramic coating coated on the metal+Y.sub.2O.sub.3 transition layer as an upper layer of the double-layer composite structure, the metal+Y.sub.2O.sub.3 transition layer is configured to reduce the difference in expansion coefficient between the Y.sub.2O.sub.3 ceramic coating and the metal substrate, and enhance the bonding force between the Y.sub.2O.sub.3 ceramic coating and the metal substrate; the high-purity Y.sub.2O.sub.3 ceramic coating is formed by depositing Y.sub.2O.sub.3 ceramic powders on the metal+Y.sub.2O.sub.3 transition layer at high speed through cold spraying high-speed deposition.

A chain component of a chain for power transmission coated with a layer of hard material includes a substrate based on steel and a layer of hard material on an outer surface of the substrate based on steel, with the layer of hard material containing metal nitrides and the C mass concentration in the layer of hard material decreasing in the direction toward the outer surface of the layer of hard material.

The multi-layer metal article (10) includes a metal base (12) formed from a first metal and at least one interlayer (14) formed on an upper surface (18) of the metal base (12). The at least one interlayer (14) is formed from a second metal having a greater hardness than a hardness of the first metal, thus increasing the hardness of the overall multi-layer metal article (10) when compared against the hardness of just the metal base (12). An outer coating layer (16) may then be coated on an upper surface (20) of the at least one interlayer (14). As a non-limiting example, the outer coating layer (16) may be a scratch-resistant material, thus increasing both the hardness and scratch resistance of the overall multi-layer metal article (10) when compared against those of just the metal base (12). The outer coating layer (16) may be transparent, partially transparent or opaque.

To provide a decorative member having a cherry blossom pink color. A cherry blossom pink decorative member of the present invention includes a base and a decorative coating formed on the base, wherein the decorative coating is formed by layering an undercoat layer and a finishing layer from the base side, the undercoat layer is a carbonitride layer composed of a carbonitride of a metal containing Ti and at least one selected from Nb and Ta, and the finishing layer is a Au alloy layer composed of an alloy containing Au, a metal having a silver color, and Cu.

A substrate for a flexible device which includes a stainless steel sheet, a nickel plating layer formed on a surface of the stainless steel sheet, and a glass layer of electrical insulating bismuth-based glass formed in the form of layer on a surface of the nickel plating layer.

A friction material comprises an Fe part which contains Fe as a main component, a coating layer formed on a surface of the Fe part, and a friction part formed on a surface of at least a part of the coating layer, and the coating layer comprises a first coating layer and a second coating layer which have a specific average thickness and a specific component in order from Fe part side, and in the second coating layer, in order of positions at which the thickness is 20%, 40%, 60% and 80% of the second coating layer from the side of the first coating layer to the side opposite thereto, a Cu content increases and a Ni content decreases.

A hot-stamping formed body includes a steel sheet having a predetermined chemical composition and a film disposed on the steel sheet. In the film, in GDS measurement in a region from a surface to a depth position of 100 μm from the surface, Zn.sub.total as a cumulative amount of Zn is 10.0 g/m.sup.2 or more and less than 40.0 g/m.sup.2, in GDS measurement in a region from the surface to a peak position of Al, a sum of Zna as a cumulative amount of Zn and a cumulative amount of Mn is 20.0 g/m.sup.2 or less and a sum of a cumulative amount of Al, a cumulative amount of Si, and a cumulative amount of Cr is 60 mg/m.sup.2 or more and 240 mg/m.sup.2 or less, Zn.sub.total-Zna is 3.0 g/m.sup.2 or more and 30.0 g/m.sup.2 or less, and an arithmetic average roughness Ra is less than 1.50 μm.

A method includes casting a metallic material (56) in a mold (20) containing a core, the core having a substrate (40, 44) coated with a coating (42). A removing of the metallic material from the mold and decoring leaves a casting having a layer formed by the coating. The coating has a ceramic having a porosity in a zone (50) near the substrate less than a porosity in a zone (52) away from the substrate.

A microheater includes a first insulating layer, a first adhesion layer on the first insulating layer, a wiring layer on the first adhesion layer, a second adhesion layer that covers the wiring layer, and a second insulating layer above the first insulating layer and on the second adhesion layer. In the microheater, the wiring layer contains platinum, the first adhesion layer and the second adhesion layer each contain a metal oxide, and the metal oxide has an oxygen-deficient region in which the oxygen is deficient in the stoichiometric ratio of metal to oxygen.

An article includes a substrate, a bond coat layer disposed on the substrate, and a layer of networked ceramic nanofibers disposed on the bond coat layer.