Joined structure of dissimilar metallic materials
AssigneeKabushiki Kaisha Toshiba
InventorsTakahiko Shindo, Yoshiyasu Itoh, Katsumi Suzuki
Life of this patent
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Abstract
A friction welded joint structure includes friction welded dissimilar first and second metallic materials. The first metallic material has a rigidity greater than the second metallic material. The angle of the first metallic material to a free edge of the first metallic material, at an end portion of a joined surface between the first and second metallic materials, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees. A reaction layer between the first and second metallic materials is more than zero and less than or equal to 20 μm. The first metallic material is copper. The second, which has the smaller rigidity, is aluminum.
Claims22
A coating end structure comprising:
- a recessed metal base;
- and
- a coating member of a coating material which has a smaller rigidity than that of the metal base and which is coated on the metal base, wherein an angle of said metal base to a free edge at the coating end portion is greater than or equal to 120 degrees and less than 180 degrees, or in the range of from 55 degrees to 85 degrees.
A coating end structure comprising:
- a recessed metal base;
- and
- a coating member of a coating material which has a greater rigidity than that of the metal base and which is coated on the metal base, wherein an angle of said metal base to a free edge at the coating end portion is greater than zero and smaller than or equal to 60 degrees, or in the range of from 95 degrees to 125 degrees.
A coating end structure of a current-carrying part for use in a power breaker having a coating structure comprising a recessed contact body and a contact portion coated on the contact body;
- wherein said contact body is made of a metal base, and said coating portion is made of a coating material having a greater rigidity than that of the metal base, and wherein an angle of said metal base to a free edge at the coating end portion is greater than zero and smaller than or equal to 60 degrees, or in the range of from 95 degrees to 125 degrees.
A coating end structure of a conductor for use in a power breaker or switch having a coating structure comprising a recessed conductor body and a conductor contact portion coated on the conductor body wherein said conductor body is made of a metal base, and said conductor contact portion is made of a coating base having a greater rigidity than that of the metal base, and wherein an angle of said metal base to a free edge at the coating end portion is greater than zero and smaller than or equal to 60 degrees, or in the range of from 95 degrees to 125 degrees.
A coating end structure of a moving blade or a combustor for use in a gas turbine having a coating structure comprising a recessed body and a corrosion resisting portion coated on the body, wherein said body is made of a base metal, and said corrosion resisting portion is made of a coating material having a smaller rigidity than that of said metal base, and wherein an angle of said metal base to a free edge at the coating end portion is greater than or equal to 120 degrees and less than 180 degrees, or in the range of from 55 degrees to 85 degrees.
A coating end structure of a moving blade or a combustor for use in a gas turbine having a coating structure comprising a recessed body and a corrosion resisting portion coated on the body, wherein said body is made of a base metal, and said corrosion resisting portion comprises a bond coat material and a topcoat material which have a smaller rigidity than that of said metal base, and wherein an angle of said metal base to a free edge at the coating end portion is greater than or equal to 120 degrees and less than 180 degrees, or in the range of from 55 degrees to 85 degrees.
Dependencies are inferred from the claim text.