Abstract
Corrosion behaviour of Cr20Mn15Fe20Co25Ni20 high-entropy alloy is studied with immersion test and electrochemical test in 3.5 wt.% NaCl solution in open environment to test the life of the alloy. In immersion testing, the weight loss percentage obtained for sample for five days and 14 days is 1.02% and 1.44%, respectively. The average surface roughness for sample in immersion testing is 1.879 µm at five days and 1.889 µm at 14 days duration. Corrosion rate obtained using weight loss method is 0.32 mm/year as compared to 0.47 mm/year and 0.30 mm/year for 304L SS and Cu alloy, respectively. Tafel plot shows the corrosion potential Ecorr value of -319 mV and the Icorr value of -5.099 A/cm2 , and highest open circuit potential (OCP) of -344 mV at 600 seconds, results that sample has increased corrosion resistance capabilities than 304L SS, 201L SS.
doi: 10.17756/nwj.2023-s1-094
Citation: Kaushik N, Meena A, Goswami V, Mali HS. 2023. Corrosion Behavior Study of Cr20Mn15Fe20Co25Ni20 High-entropy Alloy in 3.5 Wt.% NaCl Solution. NanoWorld J 9(S1): S491-S494.
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