ZIRCONIUM ALLOY FOR NUCLEAR FUEL ASSEMBLY

Title:

ZIRCONIUM ALLOY FOR NUCLEAR FUEL ASSEMBLY

Document Type and Number:

WIPO Patent Application WO/2001/009402

Kind Code:

A1

Abstract:

A zirconium alloy for nuclear fuel assemblies which contains iron, chromium, tin, and niobium. The alloy further contains oxygen purposely incorporated. The proportions of these elements are effective in improving both strength and corrosion resistance. The total amount of tin and niobium influences strength, and is preferably 0.7 wt.% or larger. The total amount of iron and chromium is also important and is preferably 0.28 to 1.0 wt.%. Thus, proof stress (strength) is enhanced and corrosion resistance is improved simultaneously. Further, hydrogen absorption and dimensional stability can be improved.

Inventors:

SUZUKI SHIGEMITU (JP)
TAKAHASHI TOSHIMITU (JP)
DOI SOICHI (JP)
SUGANO MITUTERU (JP)
SENDA YASUHIDE (JP)
KIDO TOSHIYA (JP)

Application Number:

PCT/JP2000/005049

Publication Date:

February 08, 2001

Filing Date:

July 28, 2000

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
NUCLEAR DEV CORP (JP)
SUZUKI SHIGEMITU (JP)
TAKAHASHI TOSHIMITU (JP)
DOI SOICHI (JP)
SUGANO MITUTERU (JP)
SENDA YASUHIDE (JP)
KIDO TOSHIYA (JP)

International Classes:

C22C16/00; G21C3/30; G21C3/07; (IPC1-7): C22C16/00

Foreign References:

US4992240A	1991-02-12
JPS62207835A	1987-09-12

Other References: