US5124119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making beryllium-beryllium oxide composites
Assignee: Materion Brush Inc
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Filing: 1991-02-12
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Granted: 1992-06-23
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Expires: 2011-02-12
Abstract
Abstract A beryllium metal matrix phase includes up to 70% by volume of beryllium oxide single crystals dispersed therein. The composites are useful for electronics applications because of their light weight, high strength and effective thermal properties.
Inventors
- 👤 Fritz C. Grensing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:28
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/12; C22C32/00; C22C32/001; C22C32/0015; C22C32/0036; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12146; Y10T428/1216; Y10T428/12167
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A process for producing a composite composition which comprises: (a) providing beryllium metal in powdered form; (b) providing beryllium oxide in powdered form; (c) mixing the metal powder and the oxide powder to form a composite powder; (d) forming the composite powder into a desired shape; and (e) densifying the shaped powder by hot isostatic pressing to form a composite composition with a beryllium metal matrix phase having dispersed therein from about 10% to about 70% by volume beryllium oxide.
Claim 2
Dependent Claim
80 words
A process for producing a composite composition which comprises: (a) providing beryllium metal in powdered form; (b) providing beryllium oxide in powdered form; (c) mixing the metal powder and the oxide powder to form a composite powder; (d) forming the composite powder into a desired shape; and (e) densifying the shaped powder by hot isostatic pressing to form a composite composition with a beryllium metal matrix phase having dispersed therein from about 10% to about 70% by volume beryllium oxide.
Claim 3
Dependent Claim
20 words
The process defined by claim 1, which further comprises (f) the step of rolling the composite composition into a sheet.
Claim 4
Dependent Claim
17 words
The process defined by claim 1, which further comprises the step of stress relieving the composite composition.
Claim 5
Dependent Claim
16 words
The process defined by claim 1, which further comprises the step of plating the composite composition.
Claim 6
Dependent Claim
19 words
The process defined by claim 1, wherein the composite powder is densified to at least 98% of theoretical density.
Claim 7
Dependent Claim
26 words
The process defined by claim 1, wherein the composite powder is densified by heating to about 1000° C. at about 15 Ksi for about 3 hours.
Claim 8
Dependent Claim
22 words
The process defined by claim 1, which further comprises the step of screening the composite powder to a desired average particle size.
Claim 9
Dependent Claim
40 words
The process defined by claim 1, which further comprises the steps of providing a beryllium oxide powder, wet grinding the powder to a desired average particle size, and removing the desired particles to provide the beryllium oxide in powdered form.
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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |