US6692841B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joined structure of dissimilar metallic materials
Assignee: Toshiba Corp
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Filing: 2002-10-15
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Granted: 2004-02-17
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Expires: 2022-10-15
Abstract
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.
Inventors
- 👤 Takahiko Shindo
- 👤 Yoshiyasu Itoh
- 👤 Katsumi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:38
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K31/00; B23K31/02; B23K20/233; B23K20/2336; B23K20/24; B23K33/00; H; H01; H01R; H01R4/00; H01R4/58; H01R4/62; B23K2101/00; B23K2103/00; B23K2103/18; H01H; H01H11/00; H01H11/04; H01H11/041; H01H11/042; H01H11/043; H01H11/045; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12451; Y10T428/12486; Y10T428/12493; Y10T428/12736; Y10T428/12743; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12826; Y10T428/12833; Y10T428/1284; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
76 words
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.
Claim 2
Dependent Claim
76 words
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.
Claim 3
Dependent Claim
39 words
A coating end structure as set forth in claim 1 , wherein said coating member is coated on said metal base by coating means which uses any one of the thermal spraying, PVD, CVD, welding, brazing, soldering and adhesive.
Claim 4
Dependent Claim
21 words
A coating end structure as set forth in claim 1 , wherein said metal base is copper or a copper alloy.
Claim 5
Dependent Claim
48 words
A coating end structure as set forth in claim 1 , wherein said metal base is an Ni or Co group heat resisting alloy, and said coating material having a smaller rigidity than that of said metal base is an MCrAlY alloy, wherein M is Ni and/or Co.
Claim 6
Dependent Claim
21 words
A coating structure as set forth in claim 1 , wherein the coating member is connected to the recessed metal base.
Claim 7
Dependent Claim
75 words
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.
Claim 8
Dependent Claim
75 words
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.
Claim 9
Dependent Claim
51 words
A coating end structure as set forth in claim 6 , wherein said metal base is made of a material selected from the group consisting of aluminum and an aluminum alloy, and said coating material is selected from the group consisting of copper, a copper alloy; silver and a silver alloy.
Claim 10
Dependent Claim
36 words
A coating set forth in claim 6 , wherein said coating member is coated on said metal base by coating means which uses any one of the thermal spraying, PVD, CVD, welding, brazing, soldering and adhesive.
Claim 11
Dependent Claim
22 words
A coating structure as set forth in claim 6 , wherein the coating member is permanently connected to the recessed metal base.
Claim 12
Dependent Claim
102 words
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.
Claim 13
Dependent Claim
102 words
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.
Claim 14
Dependent Claim
35 words
A coating end structure as set forth in claim 10 , wherein said contact portion is made of a material selected from the group consisting of copper, a copper alloy, silver and a silver alloy.
Claim 15
Dependent Claim
30 words
A coating end structure as set forth in claim 10 , wherein the coating end portion is set at a position apart from the contact portion of the current-carrying contact.
Claim 16
Dependent Claim
44 words
A coating end structure as set forth in claim 10 , wherein the interface of the coating portion, on which the contact portion is coated on the body portion of the current-carrying contact, has the same electrical resistance as that of a base metal.
Claim 17
Dependent Claim
22 words
A coating structure as set forth in claim 10 , wherein the contact portion is permanently connected to the recessed contact body.
Claim 18
Dependent Claim
105 words
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.
Claim 19
Dependent Claim
105 words
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.
Claim 20
Dependent Claim
37 words
A coating end structure as set forth in claim 15 , wherein said conductor contact portion is made of a coating material selected from the group consisting of copper, a copper alloy, silver and a silver alloy.
Claim 21
Dependent Claim
22 words
A coating structure as set forth in claim 15 , wherein the contact portion is permanently connected to the recessed conductor body.
Claim 22
Dependent Claim
105 words
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.
Claim 23
Dependent Claim
105 words
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.
Claim 24
Dependent Claim
42 words
A coating end structure as set forth in claim 18 , wherein said body is made of an Ni or Co group heat resisting alloy, and said heat resisting portion is made of an MCrAlY alloy, wherein M is Ni and/or Co.
Claim 25
Dependent Claim
109 words
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.
Claim 26
Dependent Claim
109 words
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.
Claim 27
Dependent Claim
57 words
A coating end structure as set forth in claim 20 , wherein said body is made of an Ni or Co group heat resisting alloy, said bond coat material of said corrosion resisting portion is an MCrAlY alloy, wherein M is Ni and/or Co, and said topcoat material coated on said bond coat material is zirconia ceramics.
Claim 28
Dependent Claim
22 words
A coating structure as set forth in claim 20 , wherein the corrosion resisting portion is permanently connected to the recessed body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-02-16 | 2007-08-18 | 2008-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-16 | 2011-08-18 | 2012-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-02-16 | 2015-08-18 | 2016-02-17 | $7700.00 | Window Closed / Lapsed |