Microstructure and Electrochemical Properties of CoCrCuFeNiNb High-Entropy Alloys Coatings
来源期刊：Acta Metallurgica Sinica2014年第6期
论文作者：Jiangbo Cheng Dan Liu Xiubing Liang Binshi Xu
文章页码：1031 - 1037
摘 要：The CoCrCuFeNiNb high-entropy alloys coatings were prepared by using plasma-transferred arc cladding process. The microstructure and electrochemical behaviors of the coating were investigated in detail. The experimental results indicated that the coating consists of a simple fcc solid solution phase and an order（Co Cr）Nb-type Laves phase. The polarization curves, obtained in 1 and 6 mol/L hydrochloric acid solutions, clearly indicated that the general corrosion resistance of the coating at ambient temperature was better than that of 304 stainless steel. The coating displayed a lower corrosion current and lower corrosion rate. Electrochemical impedance spectroscopy demonstrated that the impedance of the coating was significantly higher than that of the 304 stainless steel.
Jiangbo Cheng1,2，Dan Liu1，Xiubing Liang2，Binshi Xu2
1. College of Mechanics and Materials, Hohai University2. National Key Laboratory for Remanufacturing
摘 要：The CoCrCuFeNiNb high-entropy alloys coatings were prepared by using plasma-transferred arc cladding process. The microstructure and electrochemical behaviors of the coating were investigated in detail. The experimental results indicated that the coating consists of a simple fcc solid solution phase and an order（Co Cr）Nb-type Laves phase. The polarization curves, obtained in 1 and 6 mol/L hydrochloric acid solutions, clearly indicated that the general corrosion resistance of the coating at ambient temperature was better than that of 304 stainless steel. The coating displayed a lower corrosion current and lower corrosion rate. Electrochemical impedance spectroscopy demonstrated that the impedance of the coating was significantly higher than that of the 304 stainless steel.
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