Nuclear fuel element and a method of manufacture thereof
Patent
·
OSTI ID:4027089
A nuclear fuel element having a sheath of zirconium or a zirconium alloy and a cross-linked siloxane lacquer coating on the inner surface of the sheath and separating the nuclear fuel material from the sheath is described. The siloxane lacquer coating retards cracking of the sheath by iodine vapor emitted by the fuel during burn-up, and acts as a lubricant for the fuel to prevent rupture of the sheath by thermal ratchetting of the fuel against the sheath and caused by differential thermal expansion between the fuel and the sheath. A silicone grease is applied as a thin layer in the sheath and then baked so that oxidative cleavage of the side chains of the grease occurs to form a cross-linked siloxane lacquer coating bonded to the sheath. (Official Gazette)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-025305
- Assignee:
- to Canadian Patents and Development Ltd.
- Patent Number(s):
- US 3901761
- OSTI ID:
- 4027089
- Country of Publication:
- United States
- Language:
- English
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