Tuning the microstructure to improve corrosion resistance of additive manufacturing high-entropy alloy in proton exchange membrane fuel cells environment

被引：48
作者：
Cheng, Hongxu [1 ,2 ]
Liu, Zhuangzhuang [3 ,4 ]
Luo, Hong [1 ,2 ]
Pan, Zhimin [1 ,2 ]
Wang, Xuefei [1 ,2 ]
Zhao, Qiancheng [1 ,2 ]
Qi, Xiaohong [3 ]
Li, Xiaogang [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Natl Mat Corros & Protect Data Ctr, Beijing 100083, Peoples R China
[2] Protect Minist Educ MOE, Key Lab Corros, Beijing 100083, Peoples R China
[3] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Key Lab Adv Mat Proc MOE, Beijing 100083, Peoples R China
[4] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 213卷
基金：
中国国家自然科学基金;
关键词：
High -entropy alloy; Corrosion behavior; Passive films; Laser powder bed fusion; Proton exchange membrane fuel cell; 316L STAINLESS-STEEL; PASSIVE FILMS; ELECTROCHEMICAL-BEHAVIOR; BIPOLAR PLATES; ELECTRONIC-STRUCTURE; MECHANICAL PROPERTY; CHROMIUM NITRIDE; DONOR DENSITIES; ALSI10MG ALLOY; HEAT-TREATMENT;
D O I：
10.1016/j.corsci.2023.110969
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work tuned the microstructure of laser powder bed fusion (LPBF) CoCrFeMnNi HEAs by different heat treatment processes to improve the corrosion resistance in the simulated proton exchange membrane fuel cells (PEMFCs) environment. Research indicated that different substructures influenced the electrochemical corrosion and passive behavior of the material. The corrosion resistance was improved with increasing heat treatment temperature, which was attributed to the compositional homogenization from optimized structure, avoiding Cr depletion at grain boundaries and forming a better protective passive film. After 800 degrees C heat treatment, the sample showed the most stable passive film during the long-time potentiostatic polarization.
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页数：16
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