期刊
CORROSION SCIENCE
卷 110, 期 -, 页码 57-70出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.04.021
关键词
Iron; Metal coatings; Polarisation; SIMS; Passive films
资金
- National Natural Science Foundation of China [51471166, 51131006]
The correlation between the porosity defects, inevitably existed in thermally sprayed Fe-based amorphous coating, and the long-term corrosion behaviour of the coated steels have been studied by salt spray tests, electrochemical measurements, XPS and ToF-SIMS techniques. It has been found that porosity defects reduce the long-term corrosion resistance, increase the passive current density and lower the stability of the passive film. The deteriorated corrosion resistance is ascribed to the reduced Cr:Fe atom ratio around the porosity defects that is demonstrated by ToF- SIMS. These results provide a guide for the design of corrosion-resistant amorphous alloy coatings for engineering applications. (C) 2016 Elsevier Ltd. All rights reserved.
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