Metal treatment – Stock – Titanium – zirconium – or hafnium base
Reexamination Certificate
2007-04-12
2011-12-06
Wyszomierski, George (Department: 1733)
Metal treatment
Stock
Titanium, zirconium, or hafnium base
C148S672000, C420S423000
Reexamination Certificate
active
08070892
ABSTRACT:
A high Fe-containing zirconium composition having excellent corrosion resistance and a preparation method thereof. Specifically, disclosed are a high Fe-containing zirconium composition having excellent corrosion resistance and a preparation method thereof, the composition comprising: 0.5-1.0 wt % iron; 0.25-0.5 wt % chromium; 0.06-0.18 wt % oxygen; at least one element selected from the group consisting of 0.2-0.5 wt % tin, 0.1-0.3 wt % niobium and 0.05-0.3 wt % copper; and the balance of zirconium. The zirconium alloy has excellent corrosion resistance, and thus can be used as a material for nuclear fuel claddings, spacer grids and nuclear reactor core structures in light water reactor and heavy water reactor nuclear power plants.
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Baek Jong Hyuk
Choi Byoung Kwon
Jeong Yong Hwan
Kim Hyun Gil
Kim Jun Hwan
Bachman & LaPointe P.C.
Korea Atomic Energy Research Institute
Korea Hydro and Nuclear Power Co. Ltd.
Morillo Janelle
Wyszomierski George
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