Heat-resistant coated member
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYasushi Takai, Noriaki Hamaya, Masami Kaneyoshi
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Abstract
A heat-resistant coated member comprises a substrate composed of a material selected from among molybdenum, tantalum, tungsten, zirconium, aluminum, titanium, carbon, and alloys, oxide ceramics, non-oxide ceramics and carbide materials thereof, which is covered with a layer composed primarily of a rare earth-containing oxide. In addition to heat resistance, the coated member has good corrosion resistance and non-reactivity, making it highly suitable as a part for sintering or heat-treating metals and ceramics in a vacuum, an inert atmosphere or a reducing atmosphere.
Claims6
A heat-resistant coated member in which a substrate consisting of a metal selected from the group consisting of molybdenum and tantalum is directly coated by a thermal spraying operation with a layer consisting of lanthanoid-containing oxide, wherein
- the layer consisting of a lanthanoid-containing oxide is a lanthanoid-containing oxide layer containing ytterbium in an amount that accounts for at least 80 atom % of all the metal elements including lanthanoid elements.
A heat-resistant coated member in which a substrate consisting of a metal selected from the group consisting of molybdenum and tantalum is directly coated by a thermal spraying operation with a layer consisting of lanthanoid-containing oxide, wherein
- the layer consisting of a lanthanoid-containing oxide has a thickness of from 0.02 to 0.4 mm.
A heat-resistant coated member in which a substrate consisting of a metal selected from the group consisting of molybdenum and tantalum is directly coated by a thermal spraying operation with a layer consisting of lanthanoid-containing oxide, wherein
- the layer consisting of a lanthanoid-containing oxide is provided thereon with one or more layers of a compound of at least one element selected from among Group IIIA to Group VIII elements in the CAS version of the periodic table.
A heat-resistant coated member in which a substrate consisting of a metal selected from the group consisting of molybdenum and tantalum is directly coated by a thermal spraying operation with a layer consisting of lanthanoid-containing oxide, wherein the lanthanoid-containing oxide consists of an oxide of at least one element selected from the group consisting of ytterbium, europium and samarium.
Dependencies are inferred from the claim text.