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US4071335A
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US
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Zr2 Ni as a getter metal and nuclear reactor fuel element employing such
Assignee: SAES Getters SpA
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Filing: 1976-03-26
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Granted: 1978-01-31
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Expires: 1996-03-26
Abstract
Abstract Zr 2 Ni sorbs both oxygen and hydrogen from water making its use advantageous as a getter metal in a nuclear reactor fuel element.
Inventors
- 👤 Aldo Barosi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:22
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/04; C01B3/042; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0259; C01B13/0281; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/50; C01B3/508; G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/17; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02E60/00; Y02E60/30; Y02E60/32; Y02E60/36; Y10; Y10S; Y10S95/00; Y10S95/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
63 words
A process for sorbing both oxygen and hydrogen from water comprising contacting the water with a getter metal consisting essentially of Zr 2 Ni wherein the partial pressure of the water is less than 100 torr; wherein the getter metal has a temperature of 150° to 700° C; wherein the getter metal is capable of sorbing up to 5 weight percent of water.
Claim 2
Dependent Claim
63 words
A process for sorbing both oxygen and hydrogen from water comprising contacting the water with a getter metal consisting essentially of Zr 2 Ni wherein the partial pressure of the water is less than 100 torr; wherein the getter metal has a temperature of 150° to 700° C; wherein the getter metal is capable of sorbing up to 5 weight percent of water.
Claim 3
Dependent Claim
13 words
A process of claim 1 wherein the water is present as water vapor.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein the water vapor is admixed with a rare gas.
Claim 5
Dependent Claim
27 words
The process of claim 3 wherein the rare gas is helium and the combined pressure of the water vapor and the helium is 1 to 30 atmospheres.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein the Zr 2 Ni is present as finely-divided particles.
Claim 7
Dependent Claim
19 words
The process of claim 1 wherein the getter metal is maintained at a temperature of 200° to 500° C.
Claim 8
Dependent Claim
28 words
The process of claim 1 wherein the getter metal is first activated by heating it to a temperature of 800° to 900° C for 5 to 50 seconds.
Claim 9
Dependent Claim
21 words
The process of claim 7 wherein the getter metal is maintained, after activation, at a temperature of 20° to 700° C.
Claim 10
Dependent Claim
85 words
A process for sorbing both oxygen and hydrogen from water vapor present in admixture with helium in a nuclear reactor fuel element the walls of which are constructed of a zirconium alloy, said process comprising contacting the water vapor with a getter metal consisting essentially of Zr 2 Ni maintained at a temperature of 200° to 500° C wherein the partial pressure of the water is less than 100 torr; wherein the getter metal is capable of sorbing up to 5 weight percent of water.
Claim 11
Dependent Claim
85 words
A process for sorbing both oxygen and hydrogen from water vapor present in admixture with helium in a nuclear reactor fuel element the walls of which are constructed of a zirconium alloy, said process comprising contacting the water vapor with a getter metal consisting essentially of Zr 2 Ni maintained at a temperature of 200° to 500° C wherein the partial pressure of the water is less than 100 torr; wherein the getter metal is capable of sorbing up to 5 weight percent of water.
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) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |