US6127048A
Expired / Lapsed
US
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Article of manufacture having a metal substrate with an oxide layer and an improved anchoring layer and method of bonding the same
Assignee: Siemens AG
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Filing: 1999-01-25
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Granted: 2000-10-03
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Expires: 2019-01-25
Abstract
Abstract An article of manufacture includes a substrate and an anchoring layer disposed on a surface of the substrate. The substrate is capable of developing a first oxide on the surface which is tightly bonded thereto and includes a first metallic element. Alternatively, the surface is formed of the first oxide. The anchoring layer is formed with a ternary oxide of the first metallic element, a second metallic element and oxygen. A second oxide layer, which contains an oxide of the second metallic element, is disposed on the anchoring layer. The anchoring layer is formed on the substrate in a series of process steps, which include: establishing an atmosphere containing oxygen around the article; evaporating a compound of the first metallic element and a compound of the second metallic element into the atmosphere and forming a ternary gas phase containing the first metallic element, the second metallic element and the oxygen; and precipitating the ternary gas phase on the article.
Inventors
- 👤 Wolfram Beele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:12
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/04; C23C28/042; C23C14/00; C23C14/02; C23C14/024; C23C14/06; C23C14/08; C23C26/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12861; Y10T428/12931; Y10T428/12944
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
98 words
An article of manufacture, comprising: a metal substrate having a surface, said metal substrate having a first oxide layer disposed on and tightly bonded to said surface, said first oxide layer including a first metallic element; an anchoring layer disposed on said surface, said anchoring layer including a ternary oxide formed with said first metallic element, a second metallic element and oxygen, said ternary oxide being selected from the group consisting of spinels, pyrochlores. and perovskites; and a second oxide layer disposed on said anchoring layer, said second oxide layer containing an oxide of said second metallic element.
Claim 2
Dependent Claim
98 words
An article of manufacture, comprising: a metal substrate having a surface, said metal substrate having a first oxide layer disposed on and tightly bonded to said surface, said first oxide layer including a first metallic element; an anchoring layer disposed on said surface, said anchoring layer including a ternary oxide formed with said first metallic element, a second metallic element and oxygen, said ternary oxide being selected from the group consisting of spinels, pyrochlores. and perovskites; and a second oxide layer disposed on said anchoring layer, said second oxide layer containing an oxide of said second metallic element.
Claim 3
Dependent Claim
91 words
An article of manufacture, comprising: a substrate having a surface formed by a first oxide including a first metallic element; an anchoring layer disposed on said surface, said anchoring layer including a ternary oxide formed with said first metallic element, a second metallic element and oxygen said ternary oxide being selected from the group consisting of spinels, pyrochlores, and perovskites; and a second oxide layer disposed on said anchoring layer and bonded to said surface by said anchoring layer, said second oxide layer containing an oxide of said second metallic element.
Claim 4
Dependent Claim
91 words
An article of manufacture, comprising: a substrate having a surface formed by a first oxide including a first metallic element; an anchoring layer disposed on said surface, said anchoring layer including a ternary oxide formed with said first metallic element, a second metallic element and oxygen said ternary oxide being selected from the group consisting of spinels, pyrochlores, and perovskites; and a second oxide layer disposed on said anchoring layer and bonded to said surface by said anchoring layer, said second oxide layer containing an oxide of said second metallic element.
Claim 5
Dependent Claim
18 words
The article according to claim 1, wherein said ternary oxide is a principal constituent of said anchoring layer.
Claim 6
Dependent Claim
16 words
The article according to claim 1, wherein said anchoring layer consists essentially of said ternary oxide.
Claim 7
Dependent Claim
13 words
The article according to claim 1, wherein said first metallic element is aluminum.
Claim 8
Dependent Claim
13 words
The article according to claim 1, wherein said second metallic element is zirconium.
Claim 9
Dependent Claim
17 words
The article according to claim 6, wherein said second oxide layer contains zirconia as a principal constituent.
Claim 10
Dependent Claim
18 words
The article according to claim 6, wherein said second oxide layer consists essentially of a partly stabilized zirconia.
Claim 11
Dependent Claim
26 words
The article according to claim 6, wherein said first metallic element is aluminum, and said ternary oxide is a pyrochlore formed of aluminum, zirconium and oxygen.
Claim 12
Dependent Claim
14 words
The article according to claim 1, wherein said anchoring layer is doped with nitrogen.
Claim 13
Dependent Claim
24 words
The article according to claim 10, wherein said nitrogen is present in said anchoring layer in an amount between 1 and 10 atom percent.
Claim 14
Dependent Claim
17 words
The article according to claim 1, wherein said substrate is formed of a nickel or cobalt-based superalloy.
Claim 15
Dependent Claim
26 words
The article according to claim 1, including a metallic bonding layer interposed between said substrate and said anchoring layer, said surface defined on said bonding layer.
Claim 16
Dependent Claim
26 words
The article according to claim 13, wherein said bonding layer is formed of a material selected from the group consisting of metal aluminides and MCrAlY alloys.
Claim 17
Dependent Claim
18 words
The article according to claim 1, wherein said anchoring layer has a thickness of less than 25 micrometers.
Claim 18
Dependent Claim
22 words
The article according to claim 1, wherein said substrate, said anchoring layer and said second oxide layer form a gas turbine component.
Claim 19
Dependent Claim
53 words
The article according to claim 16, wherein said gas turbine component includes a mounting portion for holding said component in operation and an active portion subject to a hot gas stream streaming along said component in operation, said active portion at least partly covered by said anchoring layer and said second oxide layer.
Claim 20
Dependent Claim
18 words
The article according to claim 2, wherein said ternary oxide is a principal constituent of said anchoring layer.
Claim 21
Dependent Claim
16 words
The article according to claim 2, wherein said anchoring layer consists essentially of said ternary oxide.
Claim 22
Dependent Claim
13 words
The article according to claim 2, wherein said first metallic element is aluminum.
Claim 23
Dependent Claim
13 words
The article according to claim 2, wherein said second metallic element is zirconium.
Claim 24
Dependent Claim
17 words
The article according to claim 21, wherein said second oxide layer contains zirconia as a principal constituent.
Claim 25
Dependent Claim
18 words
The article according to claim 21, wherein said second oxide layer consists essentially of a partly stabilized zirconia.
Claim 26
Dependent Claim
26 words
The article according to claim 21, wherein said first metallic element is aluminum, and said ternary oxide is a pyrochlore formed of aluminum, zirconium and oxygen.
Claim 27
Dependent Claim
14 words
The article according to claim 2, wherein said anchoring layer is doped with nitrogen.
Claim 28
Dependent Claim
24 words
The article according to claim 25, wherein said nitrogen is present in said anchoring layer in an amount between 1 and 10 atom percent.
Claim 29
Dependent Claim
17 words
The article according to claim 2, wherein said substrate is formed of a nickel or cobalt-based superalloy.
Claim 30
Dependent Claim
26 words
The article according to claim 2, including a metallic bonding layer interposed between said substrate and said anchoring layer, said surface defined on said bonding layer.
Claim 31
Dependent Claim
26 words
The article according to claim 28, wherein said bonding layer is formed of a material selected from the group consisting of metal aluminides and MCrAlY alloys.
Claim 32
Dependent Claim
18 words
The article according to claim 2, wherein said anchoring layer has a thickness of less than 25 micrometers.
Claim 33
Dependent Claim
22 words
The article according to claim 2, wherein said substrate, said anchoring layer and said second oxide layer form a gas turbine component.
Claim 34
Dependent Claim
53 words
The article according to claim 31, wherein said gas turbine component includes a mounting portion for holding said component in operation and an active portion subject to a hot gas stream streaming along said component in operation, said active portion at least partly covered by said anchoring layer and said second oxide layer.
References Cited (Backward Citations)
FR1500175A
Cited
FR1536493A
Cited
US4055705A
Cited
US4321310A
Cited
US4321311A
Cited
EP0185603A1
Cited
US5262245A
Cited
US5273712A
Cited
US5268238A
Cited
US5154855A
Cited
EP0430874A1
Cited
US5087477A
Cited
US5238752A
Cited
US5401307A
Cited
US5985467A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2003-10-03 | 2004-04-03 | 2004-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-03 | 2008-04-03 | 2008-10-03 | $3760.00 | Window Closed / Lapsed |
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