Evaluation of nitrogen content on pitting and repassivation behavior of a high alloy nickel‐reduced austenitic stainless steel

Materials and Corrosion(2022)

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摘要
The present study deals with the pitting and repassivation behavior of a nickel-reduced austenitic stainless steel with different nitrogen contents. While nitrogen promoted the resistance to pitting, no significant effect on repassivation was found. The study also aims to address the experimental difficulties in determining repassivation potentials owing to the occurrence of crevice corrosion. Furthermore, the mechanism of the ongoing reactions was investigated, indicating that pitting was initiated in regions where manganese sulfide inclusions were present next to the remaining delta-ferrite.
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关键词
nitrogen,pitting,polarization,repassivation,stainless steel
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