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US4124737A
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High temperature wear resistant coating composition
Assignee: Praxair ST Technology Inc
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Filing: 1976-12-30
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Granted: 1978-11-07
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Expires: 1996-12-30
Abstract
Abstract A coating composition for producing high temperature, wear-resistant coatings on a metallic substrate, such as a nickel, cobalt, or iron base alloy, consisting of a cobalt base alloy with chromium, tantalum and carbon additions thereto. The basic composition may also contain one or more of aluminum, yttrium or the rare earth metals, silicon, manganese, or a dispersion of a metal oxide, such as alumina (Al2O3).
Inventors
- 👤 Thomas A. Wolfla
- 👤 Robert C. Tucker, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C09; C09D; C09D5/00; C09D5/18; C23C30/00; C23C4/073; C23C4/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/1266; Y10T428/12667; Y10T428/12771; Y10T428/12861; Y10T428/12937
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
24 words
A coating composition for producing high temperature wear-resistance coating consisting essentially of 17-35 Wt.% chromium; 5-20 Wt.% tantalum; 0.5 to 3.5 carbon, balance Co.
Claim 2
Dependent Claim
24 words
A coating composition for producing high temperature wear-resistance coating consisting essentially of 17-35 Wt.% chromium; 5-20 Wt.% tantalum; 0.5 to 3.5 carbon, balance Co.
Claim 3
Dependent Claim
31 words
Composition according to claim 1 including up to 2.0 Wt.% yttrium or the gram molecular equivalency of the rare earth metals; up to 2.5 Wt.% silicon, up to 3.0 Wt.% manganese.
Claim 4
Dependent Claim
9 words
Composition according to claim 1 including 5-14 Wt.% aluminum.
Claim 5
Dependent Claim
9 words
Composition according to claim 2 including 5-14 Wt.% aluminum.
Claim 6
Dependent Claim
58 words
Composition according to claim 1 including 2-50 Vol. % of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 7
Dependent Claim
58 words
Composition according to claim 2 including 2-50 Vol. % of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 8
Dependent Claim
57 words
Composition according to claim 3 including 2-50 Vol. % of metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 9
Dependent Claim
57 words
Composition according to claim 4 including 2-50 Vol.% of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 10
Dependent Claim
27 words
A coated article consisting of a metal substrate having a coating layer consisting essentially of 17-35 Wt.% chromium; 5-20 Wt.% tantalum; 0.5 to 3.5 carbon, balance Co.
Claim 11
Dependent Claim
27 words
A coated article consisting of a metal substrate having a coating layer consisting essentially of 17-35 Wt.% chromium; 5-20 Wt.% tantalum; 0.5 to 3.5 carbon, balance Co.
Claim 12
Dependent Claim
33 words
Article according to claim 9 wherein the coating includes up to 2.0 Wt.% yttrium or the gram molecular equivalency of rare earth metals; up to 2.5 Wt.% silicon, up to 3.0 Wt.% manganese.
Claim 13
Dependent Claim
12 words
Article according to claim 9 wherein the coating includes 5-14 Wt.% aluminum.
Claim 14
Dependent Claim
12 words
Article according to claim 10 wherein the coating includes 5-14 Wt.% aluminum.
Claim 15
Dependent Claim
60 words
Article according to claim 9 wherein the coating includes 2-50 Vol.% of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 16
Dependent Claim
60 words
Article according to claim 10 wherein the coating includes 2-50 Vol.% of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 17
Dependent Claim
60 words
Article according to claim 11 wherein the coating includes 2-50 Vol.% of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 18
Dependent Claim
60 words
Article according to claim 12 wherein the coating includes 2-50 Vol.% of a metal oxide taken from the class consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, and the rare earth oxides and compound combinations or mixed phase oxides of the above.
Claim 19
Dependent Claim
20 words
A coated article according to claim 9 wherein the coating layer has a thickness of between 0.003 and 0.010 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |