1529 腐食環境中での Zr 合金のフレッティング摩耗

概要

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Zr alloy is used as fuel rod in nuclear plants. Fretting wear occurs between fuel rod and spacer due to surging of cooling pure water. We are interested in dynamic corrosion behavior of Zr alloy, because Zr alloy shows high corrosion resistance in static condition. In this paper, we examined that fretting of Zr alloy in air, in Na_2SO_4 solution, and in pure water. For the comparison of Zr alloy, similar experiments were carried out for SUS304 stainless steel. As a result, the wear volume of Zr alloy increase with potential in Na_2SO_4 solution. Wear volume in Na_2SO_4 solution was greater than those of in air and in pure water by on order of magnitude. As the wear volume in pure water is equivalent to the wear volume at-2,000mV (vs.SCE) in Na_2SO_4 solution, fretting wear in Zr alloy in pure water is mainly mechanical effect.
一般社団法人日本機械学会の論文
2000-07-31