A novel AlCrFeMoTi high-entropy alloy coating with a high corrosion-resistance in lead-bismuth eutectic alloy

By Jian Yang, Ke Shi, W. Zhang, Qingsong Chen, Zhien Ning, Changda Zhu, J. Liao, Yuanyou Yang, Ning Liu, Jijun Yang. Corrosion Science, 2021

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Abstract The amorphous AlCrFeMoTi high entropy alloy (HEA) coating with near-equal molar ratio was successfully deposited on F/M substrate by magnetron sputtering method. The coating exhibits excellent corrosion resistance against LBE with much thinner oxides scale and lower consumption of coating compared with the uncoated F/M steel (about an order of magnitude). The AlCrFeMoTi HEA coating has great potential in LBE-cooled fast reactor application. However, the elemental aggregation and local oxidation occur in the coating, and corrosion products of Fe-oxides and voids appear at the interface between the coating and substrate when the corrosion temperature reaches 650 ℃.

Subfields: Aerospace Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/44e349920184fe855be126b40dbab152b72461ab