US3928027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonswelling alloy
Assignee: United States Department of Energy
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Filing: 1974-08-20
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Granted: 1975-12-23
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Expires: 1994-08-20
Abstract
Abstract An aluminium alloy containing one weight percent copper has been found to be resistant to void formation and thus is useful in all nuclear applications which currently use aluminium or other aluminium alloys in reactor positions which are subjected to high neutron doses.
Inventors
- 👤 Samuel D Harkness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:56
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/07; C; C22; C22C; C22C21/00; C22C21/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A WATER-COOLED NUCLEAR REACTOR DESIGNED FOR OPERATION IN THE TEMPERATURE RANGE OF FROM 0* TO 200*C. AND TO NEUTRON FLUENCES GREATER THAN 10**19N/CM2 (E>0.1 MEV), THE IMPROVEMENT WHEREIN THE FUEL ELEMENT CLADDING AND STRUCTURAL MATERIAL OF THE REACTOR CONSISTS OF AN ALLOY CONTAINING 99% ALUMINUM AND 1% COPPER WHEREBY SWELLING OF THE CLADDING AND STRUCTURAL MATERIAL WILL NOT OCCUR UNDER IRRADIATION SINCE THE ALLOY EXHIBITS LITTLE SWELLING UPON IRRADIATION DUE TO THE COMBINED EFFECTS OF SUBSTITUTIONAL SOLUTE INTERSTITIAL TRAPPING AND SECOND-PHASE PRECIPATION.
Claim 2
Dependent Claim
83 words
IN A WATER-COOLED NUCLEAR REACTOR DESIGNED FOR OPERATION IN THE TEMPERATURE RANGE OF FROM 0* TO 200*C. AND TO NEUTRON FLUENCES GREATER THAN 10**19N/CM2 (E>0.1 MEV), THE IMPROVEMENT WHEREIN THE FUEL ELEMENT CLADDING AND STRUCTURAL MATERIAL OF THE REACTOR CONSISTS OF AN ALLOY CONTAINING 99% ALUMINUM AND 1% COPPER WHEREBY SWELLING OF THE CLADDING AND STRUCTURAL MATERIAL WILL NOT OCCUR UNDER IRRADIATION SINCE THE ALLOY EXHIBITS LITTLE SWELLING UPON IRRADIATION DUE TO THE COMBINED EFFECTS OF SUBSTITUTIONAL SOLUTE INTERSTITIAL TRAPPING AND SECOND-PHASE PRECIPATION.
References Cited (Backward Citations)
US3725309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |