期刊
CORROSION SCIENCE
卷 127, 期 -, 页码 131-140出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.08.005
关键词
Stainless steel; Potentiostatic; Crevice corrosion; Repassivation
资金
- Center of World Intelligence Project for Nuclear S & T and Human Resource Development by the Ministry of Education, Culture, Sports, Science and Technology of Japan
- JSPS KAKENHI Grant [JP15H05550]
- Grants-in-Aid for Scientific Research [15H05550] Funding Source: KAKEN
To analyze the repassivation mechanism induced by SO42- ions, in situ monitoring of the crevice corrosion morphology on Type 316L stainless steel was performed. The repassivation of the crevice corrosion was observed when the solution was changed from 1 M NaCl to 0.88 M Na2SO4 or to 1 M NaCl-0.88 M Na2SO4. The active dissolution of Type 316L stainless steel was suppressed by SO42- ions at pH 0.4 in anodic polarization measurements. The transition from active to passive states inside the crevice was likely promoted by SO42- ions.
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