US4292265A
Expired / Lapsed
US
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Method for preparing porous metal hydride compacts
Assignee: United States Department of Energy
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Filing: 1980-01-21
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Granted: 1981-09-29
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Expires: 2000-01-21
Abstract
Abstract A method for preparing porous metallic-matrix hydride compacts which can be repeatedly hydrided and dehydrided without disintegration. A mixture of a finely divided metal hydride and a finely divided matrix metal is contacted with a poison which prevents the metal hydride from dehydriding at room temperature and atmospheric pressure. The mixture of matrix metal and poisoned metal hydride is then compacted under pressure at room temperature to form porous metallic-matrix hydride compacts.
Inventors
- 👤 Moshe Ron
- 👤 Dieter M. Gruen
- 👤 Marshall H. Mendelsohn
- 👤 Irving Sheft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:47
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0084; C01B3/0078; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A method for preparing a porous metallic-matrix hydride compact comprising: forming a mixture of a finely divided, fully hydrided metal hydride and a finely divided matrix metal the matrix metal being an oxide-free, plastically deformable metal capable of binding the metal hydride, the mixture containing matrix metal in an amount sufficient to bind the metal hydride; thoroughly dispersing the metal hydride and the matrix metal in each other to form an intimate mixture; contacting the initimate mixture with a hydride poison to prevent the hydride from dehydriding at room temperature and atmospheric pressure; and compressing the mixture of matrix metal and poisoned metal hydride at room temperature and at a pressure sufficient for the matrix metal to flow plastically to bend the metal hydride together while maintaining the mixture at a temperature below 90° C., thereby forming a porous metallic matrix hydride compact.
Claim 2
Independent Claim
143 words
A method for preparing a porous metallic-matrix hydride compact comprising: forming a mixture of a finely divided, fully hydrided metal hydride and a finely divided matrix metal the matrix metal being an oxide-free, plastically deformable metal capable of binding the metal hydride, the mixture containing matrix metal in an amount sufficient to bind the metal hydride; thoroughly dispersing the metal hydride and the matrix metal in each other to form an intimate mixture; contacting the initimate mixture with a hydride poison to prevent the hydride from dehydriding at room temperature and atmospheric pressure; and compressing the mixture of matrix metal and poisoned metal hydride at room temperature and at a pressure sufficient for the matrix metal to flow plastically to bend the metal hydride together while maintaining the mixture at a temperature below 90° C., thereby forming a porous metallic matrix hydride compact.
Claim 3
Dependent Claim
56 words
The method of claim 1 wherein the mixture is formed by mixing a finely divided hydridable metal and a finely divided matrix metal, and including the additional step of: contacting the intimate mixture with hydrogen under sufficient pressure to fully hydride the hydridable metal to form a mixture of a metal hydride and a matrix metal.
Claim 4
Dependent Claim
35 words
The method of claim 2 wherein the mixture contains from about 7 to about 30 weight percent of matrix metal, and the matrix metal is selected from the group consisting of aluminum, nickel and copper.
Claim 5
Dependent Claim
28 words
The method of claim 3 wherein the hydridable metal selected from the group consisting of the LaNi 5 , LaNi 5-x Al x (x=0.01 to 1.5) and FeTi.
Claim 6
Dependent Claim
26 words
The method of claim 4 wherein the metal hydride is poisoned by contact with a gas selected from the group consisting of SO 2 and CO.
Claim 7
Dependent Claim
40 words
The method of claim 1 wherein the mixture is formed of a finely divided poisoned metal hydride and contains from about 7 to about 30 weight percent of matrix metal selected from the group consisting of aluminum, nickel and copper.
Claim 8
Dependent Claim
29 words
The method of claim 6 wherein the poisoned metal hydride is selected from the group consisting of LaNi 5 , LaNi 5-x Al x (x=0.01 to 1.5) and FeTi.
Claim 9
Dependent Claim
35 words
The method of claim 1 wherein the mixture contains from about 7 to about 30 weight percent of matrix metal, and the matrix metal is selected from the group consisting of aluminum, nickel and copper.
Claim 10
Dependent Claim
28 words
The method of claim 8 wherein the hydridable metal selected from the group consisting of the LaNi 5 , LaNi 5-x Al x (x=0.01 to 1.5) and FeTi.
Claim 11
Dependent Claim
26 words
The method of claim 9 wherein the metal hydride is poisoned by contact with a gas selected from the group consisting of SO 2 and CO.
References Cited (Backward Citations)
US3803043A
Cited
US3926671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |