发明名称 |
Zirconium alloy fuel cladding resistant to PCI crack propagation |
摘要 |
This invention relates to a tubular water reactor fuel cladding having an outer cylindrical layer composed of a conventional zirconium base alloy. Bonded to the outer layer is a second, inner layer composed of an alloy consisting essentially of: about 0.1 to 0.3 wt. % tin; about 0.05 to 0.2 wt. % iron; about 0.05 to 0.4 wt. % niobium; about 0.03 to 0.1 wt. % of either chromium or nickel, alone or in combination with each other; while keeping the sum of the iron chromium and nickel contents below 0.25 wt. %; 300 to 1200 ppm oxygen; and the balance essentially zirconium. The inner layer is characterized by excellent resistance to PCI crack propagation, excellent aqueous corrosion resistance and a fully recrystallized microstructure.
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申请公布号 |
US4775508(A) |
申请公布日期 |
1988.10.04 |
申请号 |
US19870132639 |
申请日期 |
1987.12.08 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
SABOL, GEORGE P.;MCDONALD III, SAMUEL G. |
分类号 |
G21C3/07;(IPC1-7):G21C3/20 |
主分类号 |
G21C3/07 |
代理机构 |
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