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Electron microprobe analysis has shown that the corrosion pits in Fe13Cr and 25Cr20Ni commercial stainless steels nucleate only at the sulphide inclusions. These are probably also the main sites for the Pit nucleation In Fe16Cr crystals of high purity. The role of the sulphide inclusions in pit nucleation phenomena is discussed.
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Szklarska‐Śmiałowska et al. (1970) studied this question.
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