期刊
CORROSION SCIENCE
卷 53, 期 10, 页码 3177-3185出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.05.062
关键词
Metal coatings; Stainless steel; Erosion; Polarisation; Amorphous structures; Passivity
资金
- National Natural Science Foundation of China [50971121]
- National Key Basic Research Program of China [2007CB613906]
Corrosion and slurry erosion-corrosion (E-C) behaviour of FeCrMoMnWBCSi amorphous metallic coatings (AMCs) compared with 304 stainless steel was investigated by static electrochemical measurements and weight loss tests under rotating conditions in simulated seawater. E-C rates of the AMCs increased with flow velocity, particle size, sand content and NaCl concentration. The AMCs are preferentially attacked at coating defects. The superior E-C resistance of AMCs can be attributed to the high micro-hardness, alloying elements and amorphous microstructure. The AMCs with better slurry E-C resistance may be good candidates to solve the E-C problems of marine pumps in sand-containing seawater. (C) 2011 Elsevier Ltd. All rights reserved.
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