Patent US2531976A successfully refreshed from Google Patents.
US4452865A
Expired / Lapsed
US
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Process for producing fiber-reinforced metal composite material
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1982-12-01
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Granted: 1984-06-05
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Expires: 2002-12-01
Abstract
Abstract A process for producing a fiber-reinforced metal composite material which comprises mixing an inorganic fiber with an aluminum alloy at a temperature of not lower than the melting point of said alloy to form a composite, (1) removing the composite from the mold at a temperature of not higher than the solid phase line of said alloy (i.e. a temperature at which a liquid phase appears in said alloy) and heating the composite to a temperature of more than the solid phase line and holding the temperature (heat treatment) during a definite time (Indirect method), or (2) without allowing to cool the composite to a temperature of not higher than the solid phase line (Direct method), quenching the composite to a temperature of 200 DEG C. or lower from a temperature of higher than the solid phase line but lower than the melting temperature.
Inventors
- 👤 Kohji Yamatsuta
- 👤 Ken-ichi Nishio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/08; C22C49/00; C22C49/02; C22C49/04; C22C49/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
108 words
A process for producing a fiber-reinforced metal composite material which comprises mixing an inorganic fiber with an aluminum alloy at a temperature of not lower than the melting point of said aluminum alloy to form a composite; removing the composite from a mold at a temperature of not higher than the solid phase line of said aluminum alloy and heating the composite to a temperature of more than the solid phase line and holding the temperature during a definite time; and quenching the composite to a temperature of 200° C. or lower from a temperature of higher than the solid phase line but lower than the melting temperature.
Claim 2
Dependent Claim
108 words
A process for producing a fiber-reinforced metal composite material which comprises mixing an inorganic fiber with an aluminum alloy at a temperature of not lower than the melting point of said aluminum alloy to form a composite; removing the composite from a mold at a temperature of not higher than the solid phase line of said aluminum alloy and heating the composite to a temperature of more than the solid phase line and holding the temperature during a definite time; and quenching the composite to a temperature of 200° C. or lower from a temperature of higher than the solid phase line but lower than the melting temperature.
Claim 3
Dependent Claim
23 words
A process according to claim 1, wherein the inorganic fiber is alumina-based fiber, carbon fiber, silicon carbide fiber, silica fiber or boron fiber.
Claim 4
Dependent Claim
22 words
A process according to claim 2, wherein the alumina-based fiber comprises alumina as the main component and silica as the second component.
Claim 5
Dependent Claim
19 words
A process according to claim 3, wherein the alumina-based fiber comprises not more than 28% by weight of silica.
Claim 6
Dependent Claim
18 words
A process according to claim 4, wherein the alumina-based fiber comprises 2 to 25% by weight of silica.
Claim 7
Dependent Claim
18 words
A process according to claim 3, wherein the alumina-based fiber does substantially not show the reflection of α-alumina.
Claim 8
Dependent Claim
28 words
A process according to claim 1, wherein the aluminum alloy contains a metal selected from the group consisting of copper, magnesium, silicon, and zinc as the secondary component.
Claim 9
Dependent Claim
17 words
A process according to claim 1, wherein the heat treatment is conducted for 1 to 30 hours.
Claim 10
Dependent Claim
38 words
A process according to claim 1, wherein the quenching is conducted by cooling the treated composite at a rate of 300° C./min or more from a temperature of not lower than the solid phase line to 200° C.
Claim 11
Dependent Claim
11 words
A fiber-reinforced metal composite produced by the process of claim 1.
Claim 12
Dependent Claim
11 words
A fiber-reinforced metal composite produced by the process of claim 2.
Claim 13
Dependent Claim
11 words
A fiber-reinforced metal composite produced by the process of claim 4.
Claim 14
Dependent Claim
11 words
A fiber-reinforced metal composite produced by the process of claim 7.
Claim 15
Dependent Claim
11 words
A fiber-reinforced metal composite produced by the process of claim 9.
Claim 16
Dependent Claim
109 words
A process for producing a fiber-reinforcing metal composite material which comprises mixing silica fiber with an aluminum alloy at a temperature of not lower than the melting point of said aluminum alloy to form a composite; removing the composite from a mold at a temperature of not higher than the solid phase line of said aluminum alloy and heating the composite to a temperature of more than the solid phase line and holding the temperature during a definite period of time; and quenching the composite to a temperature of 200° C. or lower from a temperature of higher than the solid phase line but lower than the melting temperature.
Claim 17
Dependent Claim
109 words
A process for producing a fiber-reinforcing metal composite material which comprises mixing silica fiber with an aluminum alloy at a temperature of not lower than the melting point of said aluminum alloy to form a composite; removing the composite from a mold at a temperature of not higher than the solid phase line of said aluminum alloy and heating the composite to a temperature of more than the solid phase line and holding the temperature during a definite period of time; and quenching the composite to a temperature of 200° C. or lower from a temperature of higher than the solid phase line but lower than the melting temperature.
Claim 18
Dependent Claim
11 words
A fiber-reinforced metal composite produced by the process of claim 15.
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |