US4596746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder sheet for sintering
Assignee: Mazda Motor Corp
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Filing: 1985-04-17
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Granted: 1986-06-24
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Expires: 2005-04-17
Abstract
Abstract A metal powder sheet for use for forming a sintered layer on a metal substrate. The sheet includes powders of a metal which provides a required physical property such as wear-resistance and ultra-fine powders of a metal having a powder size finer than 1 micron. These powders are kneaded with an addition of an acryl resin as a binder. The ultra-fine powders make it possible to carry out the sintering process at a lower temperature.
Inventors
- 👤 Tuyoshi Morishita
- 👤 Sigemi Osaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:52
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; C23C24/106; B; B22; B22F; B22F1/00; B22F1/05; B22F1/052; B22F1/10; B22F7/00; B22F7/02; B22F7/04; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A metal powder sheet for forming a wear-resistant sintered layer on a substrate of an aluminum based material, said sheet comprising metal powders of Fe-based metal containing P, Mo, Cr and C, sinter-assisting agents including ultra-fine metal powders having a sintering start temperature lower than that of the first mentioned metal powders and an acrylic resin binder, said ultra-fine metal powders being powders of a metal containing at least one of Cu, Ni, Co and Fe finer than 1 micron, said sinter-assisting agents being added in an amount of 1 to 20 weight % of total amount of said first mentioned metal powders and said sinter-assisting agents, said metal powder sheet including 6 to 1 weight % of resin binder and 94 to 99 weight % of a mixture of the first mentioned metal powders and the sinter-assisting agent.
Claim 2
Dependent Claim
139 words
A metal powder sheet for forming a wear-resistant sintered layer on a substrate of an aluminum based material, said sheet comprising metal powders of Fe-based metal containing P, Mo, Cr and C, sinter-assisting agents including ultra-fine metal powders having a sintering start temperature lower than that of the first mentioned metal powders and an acrylic resin binder, said ultra-fine metal powders being powders of a metal containing at least one of Cu, Ni, Co and Fe finer than 1 micron, said sinter-assisting agents being added in an amount of 1 to 20 weight % of total amount of said first mentioned metal powders and said sinter-assisting agents, said metal powder sheet including 6 to 1 weight % of resin binder and 94 to 99 weight % of a mixture of the first mentioned metal powders and the sinter-assisting agent.
Claim 3
Dependent Claim
23 words
A metal powder sheet in accordance with claim 1 in which the first mentioned metal powders have powder size finer than 150 mesh.
Claim 4
Dependent Claim
45 words
A metal powder sheet in accordance with claim 1 in which said resin binder is selected from polymers and copolymers of acrylic esters, polymers and copolymers of methacrylic esters, and copolymers of these esters and a monomer having a functional group copolymerizable with these esters.
Claim 5
Dependent Claim
183 words
A sintering process including steps of preparing a metal powder sheet for forming a wear-resistant sintered layer on a substrate of an aluminum based material, said sheet comprising metal powders of Fe-based metal containing P, Mo, Cr and C, sinter-assisting agents including ultra-fine metal powders having a sintering start temperature lower than that of the first mentioned metal powders and an acrylic resin binder, said ultra-fine metal powders being powders of a metal containing at least one of Cu, Ni, Co and Fe and finer than 1 micron, said sinter-assisting agents being added in an amount of 1 to 20 weight % of total amount of said first mentioned metal powders and said sinter-assisting agents, metal powder sheet including 6 to 1 weight % of resin binder and 94 to 99 weight % of mixture of the first mentioned metal powders and the sinter-assisting agent, placing the metal powder sheet on a metal substrate, preheating the metal powder sheet and the metal substrate to a temperature between 150° and 380° C. for more than 5 9minutes and thereafter heating to a sintering temperature.
Claim 6
Dependent Claim
183 words
A sintering process including steps of preparing a metal powder sheet for forming a wear-resistant sintered layer on a substrate of an aluminum based material, said sheet comprising metal powders of Fe-based metal containing P, Mo, Cr and C, sinter-assisting agents including ultra-fine metal powders having a sintering start temperature lower than that of the first mentioned metal powders and an acrylic resin binder, said ultra-fine metal powders being powders of a metal containing at least one of Cu, Ni, Co and Fe and finer than 1 micron, said sinter-assisting agents being added in an amount of 1 to 20 weight % of total amount of said first mentioned metal powders and said sinter-assisting agents, metal powder sheet including 6 to 1 weight % of resin binder and 94 to 99 weight % of mixture of the first mentioned metal powders and the sinter-assisting agent, placing the metal powder sheet on a metal substrate, preheating the metal powder sheet and the metal substrate to a temperature between 150° and 380° C. for more than 5 9minutes and thereafter heating to a sintering temperature.
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) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |