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AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsHiroyuki Kawaura, Hiroshi Kawahara, Takashi Saito, Kazuaki Nishino, Nobuhiko Matsumoto, Tadahiko Furuta
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The invention provides a method of producing an oxidation-resistant metallic part which exhibits oxidation resistance even in an oxidation atmosphere. The method includes the step of applying mechanical energy to a surface of a metallic part in the presence of particulates, and forming a protective coating in a surface of the metallic part. When the metallic part thus treated is exposed in a high temperature-oxidation atmosphere, the protective coating is oxidized to restrain the proceeding of the oxidation of the metallic part, that is the internally proceeding formation of TiO2, thus serving a remarkable improvement of the oxidation resistance.
A method comprising forming a protective coating on a surface of a metallic part of a Ti-based alloy comprising titanium (Ti) and less than 9 wt % of aluminum (Al), by applying mechanical energy to particulates consisting essentially of at least one Si alloy selected from the group consisting of CrSi2, NbSi2, MoSi2, WSi2, ZrSi2 and HfSi2, in a direction toward said surface, wherein said protective coating contains at least a part of said particulates dispersed in a matrix of said Ti-based alloy, some of which dispersed particulates being connected to each other.
A method comprising forming a protective coating on a surface of a metallic part of a Ti-based alloy by applying mechanical energy to particulates containing at least one element of yttrium (Y) zirconium (Zr), lanthanum (La), cerium (Ce) and hafnium (Hf) in a direction toward said surface, wherein said protective coating contains at least a part of said particulates dispersed in a matrix of said Ti-based alloy, some of which dispersed particulates being connected to each other.
A method comprising forming a protective coating with an oxidation resistance on a surface of a metallic part of an iron-based alloy or a nickel-based alloy by applying mechanical energy to particulates consisting essentially of at least one Si alloy selected from the group consisting of CrSi2, NbSi2, MoSi2, WSi2, ZrSi2 and HfSi2, wherein said protective coating contains at least a part of said particulates dispersed in a matrix of said alloy, some of which dispersed particulates being connected to each other.
Dependencies are inferred from the claim text.