Compared with traditional alloys,high-entropy alloys display bettercorrosion resistance,high-temperature wear resistance and comprehensive mechanical properties.Thus,high-entropy alloys can find their applications in some harsh environments where traditional alloys may not satisfy the re-quirements.This work focuses on the corrosion resistance of high-entropy alloys.The influence of com-monly used alloying elements on the corrosion resistance of high-entropy alloys with BCC,FCC,FCC+BCC and HCP crystal structures in sodium chloride and acidic solution media was discussed.The effect of the interaction between metal elements on corrosion resistance of high-entropy alloys was briefly ex-plained.The influence of grain size,dislocation density,and crystal structure on the corrosion resistance of high-entropy alloys was also discussed.The results show that the corrosion resistance of high-entropy alloys can be improved by increasing grain size or reducing dislocation density.Several methods for im-proving the corrosion resistance of high-entropy alloys such as heat treatment and anodizing treatment,as well as application of corrosion inhibitor,were summarized.Finally,suggestions and prospects for the future development of high-entropy alloys were put forward.
关键词
高熵合金/耐蚀性能/苛刻环境/微观组织/合金元素
Key words
high-entropy alloy/corrosion resistance/harsh environment/microstructure/alloy element
维普
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