Patent US4358512A successfully refreshed from Google Patents.
US4358512A
Expired / Lapsed
US
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Metal-composite bonding
Assignee: RTX Corp
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Filing: 1980-12-12
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Granted: 1982-11-09
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Expires: 2000-12-12
Abstract
Abstract A method of bonding a graphite fiber reinforced glass matrix composite to a metal structure comprising depositing a layer of eutectic alloy metal component to the bond surfaces of the metal and composite followed by placing the thus treated bond surfaces of the metal and composite together with a layer of eutectic alloy containing such metal therebetween. The metal-bond-composite is then heated to melt the alloy and bond the composite to the metal. Articles formed by such a process are also described. The method has particular utility in bonding cooling channel containing metal bases to graphite-glass composite laser mirrors.
Inventors
- 👤 Mark A. Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:06
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/043; B32B15/08; B32B15/14; C; C03; C03C; C03C14/00; C03C14/002; C03C27/00; C03C27/04; C03C27/042; C03C27/046; B32B2311/00; B32B2311/02; B32B2311/04; B32B2311/16; C03C2214/00; C03C2214/02; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12597; Y10T428/12604; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12861; Y10T428/12889; Y10T428/29; Y10T428/2913; Y10T428/2918
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A bonded metal-composite material comprising a metal substrate bonded to a thermally stable high strength graphite fiber reinforced glass matrix composite by a bond comprising a eutectic alloy layer sandwiched between two layers of eutectic alloy metal components.
Claim 2
Dependent Claim
38 words
A bonded metal-composite material comprising a metal substrate bonded to a thermally stable high strength graphite fiber reinforced glass matrix composite by a bond comprising a eutectic alloy layer sandwiched between two layers of eutectic alloy metal components.
Claim 3
Dependent Claim
26 words
The article of claim 1 wherein the bond material has a bond strength greater than 2.8×10 3 pounds per square inch (1.9×10 7 NT/M 2 ).
Claim 4
Dependent Claim
21 words
The article of claim 1 wherein the eutectic alloy metal component is gold and the eutectic alloy is a gold-tin mixture.
Claim 5
Dependent Claim
36 words
The article of claim 1 wherein the graphite fibers have a modulus of elasticity of at least 531 GPa, a tensile strength of at least 1724 MPa and a density of about 1.96 gm/cm 3 .
Claim 6
Dependent Claim
44 words
The article of claim 1 wherein the composite contains 40% to 70% by volume graphite fibers having orientation in the composite of 0° and 90°; 0°, 45° and 90°; 0°, 60° and 120° are discontinuous; or have fiber orientation substantially perpendicular to the bond.
Claim 7
Dependent Claim
14 words
The article of claim 1 wherein the metal substrate is a molybdenum face plate.
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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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |