Effects of C and heat treatment on microstructure, mechanical, and tribo-corrosion properties of VAlTiMoSi high-entropy alloy coating
Author:
Fu Zhengyi1, Ding Sansan1, Tian Aiqin1, Chen Dawei1, Chen Xu1, Lin Huaqiang1, Li Zhongwen1, Sun Xiaohong1, Meng Xiangjian1, Zhou Wei2
Affiliation:
1. CRRC Qingdao Sifang Co., Ltd. , Qingdao , 266111 , China 2. Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University , Changsha , 410083 , China
Abstract
Abstract
High-entropy alloy (HEA) coatings have demonstrated great potential in anti-wear applications. To further improve the mechanical and tribo-corrosion properties of the HEA coatings, the VAlTiMoSi, (VAlTiMoSi)80C20, and (VAlTiMoSi)60C40 coatings were successfully deposited by DC magnetron sputtering. The microstructure, mechanical, and tribo-corrosion properties of as-deposited and heat-treated coatings were analyzed. All the as-deposited HEA coatings were BCC + amorphous phases. The thermal effect promoted the formation of intermetallic compounds, and the C inhibited the formation of Mo3Si and Ti5Si4. The hardness and elastic modulus of the heat-treated VAlTiMoSi coating were 20.1 and 294.0 GPa, respectively. The heat-treated (VAlTiMoSi)60C40 coating showed the lowest wear rate, namely 5.2 × 10−14 m3·Nm−1, and the best formation ability of passive film in 3.5 wt% NaCl solution.
Publisher
Walter de Gruyter GmbH
Reference31 articles.
1. Robert, J. K. Marine wear and tribocorrosion. Wear, Vol. 376–377, 2017, pp. 893–910. 2. Ma, F. L., J. L. Li, Z. X. Zeng, and Y. M. Gao. Structural, mechanical and tribocorrosion behaviour in artificial seawater of CrN/AlN nano-multilayer coatings on F690 steel substrates. Applied Surface Science, Vol. 428, 2018, pp. 404–414. 3. Li, H., L. L. Liu, P. Guo, L. L. Sun, J. Wei, Y. R. Liu, et al. Long-term tribocorrosion resistance and failure tolerance of multilayer carbon-based coatings. Friction, Vol. 10, 2022, pp. 1707–1721. 4. Chen, Q., Y. Z. Cao, Z. W. Xie, T. Chen, Y. Y. Wan, H. Wang, et al. Tribocorrosion behaviors of CrN coating in 3.5 wt% NaCl solution. Thin Solid Films, Vol. 622, 2017, pp. 41–47. 5. Li, B., C. Li, Y. M. Gao, H. J. Guo, Q. L. Zheng, Y. C. Kang, et al. Influence of heat treatment on corrosion-wear behavior of Ni-based coating in artificial seawater. Journal of Materials Engineering and Performance, Vol. 28, 2019, pp. 7828–7834.
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