期刊
CORROSION SCIENCE
卷 111, 期 -, 页码 414-421出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.05.030
关键词
Stainless steel; Copper; Pitting corrosion; Inclusion; TEM
资金
- National Natural Science Foundation of China [51101157]
- Innovation Fund in IMR
- Hundred Talents Projects of Chinese Academy of Sciences
The effect of alloying copper on the dissolution of manganese sulphide which triggers the pitting corrosion of stainless steels was studied by in-situ ex-environment transmission electron microscopy (TEM) with an atomic resolution. It was found that the benefits of Cu addition act in two ways: Cu ions replace the Mn ions in the surface layer of MnS and insoluble copper sulphide compound forms; on the other hand, Cu ions could stabilize harmful surphur species released from dissolved MnS. The two processes are supposed to be helpful to reduce the detrimental effect of MnS on the corrosion resistance of stainless steels. (C) 2016 Elsevier Ltd. All rights reserved.
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