US4770701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-ceramic composites and method of making
Assignee: Standard Oil Co
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Filing: 1986-04-30
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Granted: 1988-09-13
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Expires: 2006-04-30
Abstract
Abstract Amorphous metal-ceramic and microcrystalline metal-ceramic composites are synthesized by solid state reaction-formation methods. These metal-ceramic composites are characterized by a composition that ranges from about 75 to about 99.9 percent ceramic in about 0.1 to about 25 percent amorphous or microcrystalline metal binder phase.
Inventors
- 👤 Richard S. Henderson
- 👤 Michael A. Tenhover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:58
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/006; B22F3/007; C; C22; C22C; C22C19/00; C22C29/00; C22C33/00; C22C33/02; C22C9/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
An amorphous metal-ceramic composite comprising about 75% to about 99.9% ceramic particles disposed in an amorphous metal matrix, said matrix formed by the solid state diffusion of a metal into the surface region of said ceramic particles to form said amorphous metal matrix.
Claim 2
Dependent Claim
43 words
An amorphous metal-ceramic composite comprising about 75% to about 99.9% ceramic particles disposed in an amorphous metal matrix, said matrix formed by the solid state diffusion of a metal into the surface region of said ceramic particles to form said amorphous metal matrix.
Claim 3
Dependent Claim
29 words
The composite as in claim 1 wherein said ceramic particles comprise carbides, nitrides, oxides, and borides of Si, Al, Mo, Cr, W, Ti, V, Zr, HF, and combinations thereof.
Claim 4
Dependent Claim
25 words
The amorphous metal-ceramic composite as in claim 1 wherein said metal comproses Fe, Ni, Co, Cu and combinations thereof, which diffuse into said ceramic particles.
Claim 5
Dependent Claim
53 words
A process for the synthesis of an amorphous metal-ceramic composite, comprising intimately mixing alloying elements in the presence of ceramic particles and heat-treating this mixture to initiate a solid-state reaction-formation, said reaction-formation yielding a dual-phase microstructure composed of from about 75% to about 99.9% ceramic particles interspersed in an amorphous solid matrix binder.
Claim 6
Dependent Claim
53 words
A process for the synthesis of an amorphous metal-ceramic composite, comprising intimately mixing alloying elements in the presence of ceramic particles and heat-treating this mixture to initiate a solid-state reaction-formation, said reaction-formation yielding a dual-phase microstructure composed of from about 75% to about 99.9% ceramic particles interspersed in an amorphous solid matrix binder.
Claim 7
Dependent Claim
17 words
The process as in claim 4 wherein said solid state reaction is a solid state incorporation/reduction reaction.
Claim 8
Dependent Claim
35 words
The process as in claim 4 wherein said mixture is heat-treated at a temperature between about 0.5 to about 0.8 of the glass transition temperature of the amorphous metal component of said amorphous metal-ceramic composite.
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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) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |