Potential dependence of SCC susceptibility and film characteristics was investigated in 563K high purity water, using a new potentiostat with a dynamic potential drop compensator.Slow strain rate tests were conducted on sensitized Type 304 stainless steel under controlled potentials, and oxide films formed during the tests were analyzed. SCC susceptibility and film characteristics clearly depended on the controlled potential.Slight transgranular SCC was observed in the region from the corrosion potential to the beginning potential of passivity. Intergranular SCC took
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