Patent US4263353A successfully refreshed from Google Patents.
US4263353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame spray powder mix
Assignee: Eutectic Corp
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Filing: 1979-08-15
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Granted: 1981-04-21
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Expires: 1999-08-15
Abstract
Abstract A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g., steel, case iron, among other metal substrates, the powder mix comprising particles of at least one metal silicide, e.g., titaniium disilicide, mixed with a coating metal powder, such as nickel powder. The amount of metal silicide in the powder mix preferably ranging from about 2% to 20% by weight.
Inventors
- 👤 Mahesh S. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:51
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
A method of producing an adherent bond coat on a metal substrate which comprises, flame spraying onto said metal substrate a powder mix consisting essentially of at least one metal silicide selected from the group consisting of disilicides of Ti, Zr, Hf, V, Nb, Ta, Cr, W, Mn, Co, boron silicide and magnesium silicide mixed with a coating metal powder, the average size of said metal silicide ranging from about 10 to 150 microns and said coating metal powder ranging from about 30 to 140 microns, the composition of said powder mix ranging from about 2% to 20% by weight of said silicide, with substantially the balance said coating metal powder, and continuing said spraying to form an adherent bond coat on said substrate characterized by improved bond strength.
Claim 2
Independent Claim
129 words
A method of producing an adherent bond coat on a metal substrate which comprises, flame spraying onto said metal substrate a powder mix consisting essentially of at least one metal silicide selected from the group consisting of disilicides of Ti, Zr, Hf, V, Nb, Ta, Cr, W, Mn, Co, boron silicide and magnesium silicide mixed with a coating metal powder, the average size of said metal silicide ranging from about 10 to 150 microns and said coating metal powder ranging from about 30 to 140 microns, the composition of said powder mix ranging from about 2% to 20% by weight of said silicide, with substantially the balance said coating metal powder, and continuing said spraying to form an adherent bond coat on said substrate characterized by improved bond strength.
Claim 3
Dependent Claim
29 words
The method of claim 1, wherein the flame spray powder mix also contains silicon particles in an amount ranging up to about 15% by weight of the total mix.
Claim 4
Dependent Claim
31 words
The method of claim 1, wherein the amount of metal silicide ranges from about 2% to 15% by weight, and wherein the average size ranges from about 10 to 75 microns.
Claim 5
Dependent Claim
30 words
The flame spray method of claim 1, wherein the coating metal is selected from the group consisting of Ni, Co, Fe, Cu, nickel-base, cobalt-base, iron-base, copper-base alloys, and aluminum bronze.
Claim 6
Dependent Claim
21 words
The flame spray method of claim 1, wherein the metal silicide is TiSi 2 and the coating metal powder is nickel.
Claim 7
Independent Claim
111 words
A method of producing an adherent bond coat on a metal substrate which comprises, flame spraying onto said metal substrate a powder mix formed of TiSi 2 powder mixed with a coating metal powder, the average size of said TiSi 2 powder ranging from about 10 to 150 microns and said coating metal powder ranging from about 30 to 140 microns, the composition of said powder mix ranging from about 2% to 20% by weight of said TiSi 2 with substantially the balance of said mixture said coating metal powder, and continuing said spraying to form an adherent bond coat on said substrate characterized by improved bond strength and improved machinability.
Claim 8
Independent Claim
111 words
A method of producing an adherent bond coat on a metal substrate which comprises, flame spraying onto said metal substrate a powder mix formed of TiSi 2 powder mixed with a coating metal powder, the average size of said TiSi 2 powder ranging from about 10 to 150 microns and said coating metal powder ranging from about 30 to 140 microns, the composition of said powder mix ranging from about 2% to 20% by weight of said TiSi 2 with substantially the balance of said mixture said coating metal powder, and continuing said spraying to form an adherent bond coat on said substrate characterized by improved bond strength and improved machinability.
Claim 9
Dependent Claim
29 words
The method of claim 6, wherein the flame spray powder mix also contains silicon particles in an amount ranging up to about 15% by weight of the total mixture.
Claim 10
Dependent Claim
31 words
The method of claim 6, wherein the amount of TiSi 2 ranges from about 2% to 15% by weight, and wherein the average size ranges from about 10 to 75 microns.
Claim 11
Dependent Claim
30 words
The flame spray method of claim 6, wherein the coating metal is selected from the group consisting of Ni, Co, Fe, Cu, nickel-base, cobalt-base, iron-base, copper-base alloys, and aluminum bronze.
Claim 12
Dependent Claim
14 words
The flame spray method of claim 6, wherein the coating metal powder is nickel.
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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |