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含铜Co0.4 FeCrx Cu0.3 高熵合金涂层在 3.5%NaCl 溶液中的腐蚀磨损行为研究
Study of the Tribo-corrosion Behavior of Copper-containing Co0.4 FeCrx Cu0.3 High-entropy Alloys Coatings in 3.5 wt.% NaCl Solution
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- DOI:
- 作者:
- 罗一鸣1，2，孙瑞阳3，崔学健1，4，牛根成1，4，陈 禹1，6，于 源1，4，乔竹辉1，4，5
LUOYiming1,2, SUN Ruiyang3, CUI Xuejian1,4, NIU Gencheng1,4, CHENYu1,6, YU Yuan1,4, QIAO Zhuhui1,4
- 作者单位:
- 1. 烟台先进材料与绿色制造山东省实验室，山东烟台264006；2.哈尔滨工程大学烟台研究院，山东烟台264006；3.北 京中医药大学护理学院，北京100029；4.中国科学院兰州化学物理研究所润滑材料全国重点实验室，甘肃兰州 730000；5. 烟台中科先进材料与绿色化工产业技术研究院，山东烟台264006；6.长安大学材料科学与工程学院，陕西 西安710062
1. Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China; 2. Yantai Research Institute, Harbin Engineering University, Yantai 264006, China; 3. School of Nursing, Beijing University of Chinese Medicine, Beijing 100029, China; 4. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 5. Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China; 6. School of Materials Science and Engineering, Chang'an University, Xi'an 710062, China
- 关键词:
- 高熵合金；腐蚀磨损；激光熔覆；交互作用
high-entropy alloys; tribo-corrosion; laser cladding; interaction
- 摘要:
- 海洋工程用合金材料要求兼具耐磨损与耐腐蚀性能，高熵合金因综合性能优异而具有作为涂层材料的潜 力， 调控元素分布与相分离能够进一步优化其腐蚀磨损性能。 本研究通过激光熔覆技术制备了不同Cr含量的 Co0.4 FeCrx Cu0.3 (x=0.8、0.9、1.0）高熵合金涂层，探讨 Cr 含量对合金微观结构、耐磨及耐腐蚀性的影响，分析腐蚀与摩擦的 相互作用机制。结果表明，随着Cr含量的增加，Cu元素由富Cu相逐渐转变为均匀固溶，Cr的引入促进了Cu的溶解度 提升并减少了相分离现象。 所有合金均具有FCC和BCC两种晶体结构。 Cr含量的增加促进了Cu的溶解并减少了相 分离。 腐蚀磨损过程中，腐蚀显著加剧了Cr0.4 FeCr0.9 Cu0.3合金的磨损。 计算结果表明，Cr0.8合金在腐蚀磨损作用下的总 损失率显著高于纯腐蚀和纯磨损的总和，表明其腐蚀与磨损的协同作用较大。与Cr0.8合金相比，Cr0.9和Cr1.0合金的 腐蚀磨损损失率较低，Cr0.9合金能够形成稳定的钝化膜，有效平衡腐蚀与磨损的相互作用。Marine engineering alloys must combine wear and corrosion resistance. High-entropy alloys (HEAs), with superior overall properties, are promising coatings whose tribo-corrosion performance can be enhanced by tuning the elemental distribution and phase separation. Co0.4 FeCrx Cu0.3 (x=0.8, 0.9, 1.0) high-entropy alloy coatings with varying Cr contents were fabricated via laser cladding technology to investigate the effects of the Cr content on the microstructure, wear resistance, and corrosion behavior of the alloys. The results show that as the Cr content increases, the distribution of Cu transitions from a Cu-rich phase to a homogeneous solid solution, indicating that Cr enhances the solubility of Cu and reduces phase separation. XRD analysis reveals that all the alloys exhibit both FCC and BCC crystal structures. During the corrosion-wear process, corrosion significantly exacerbates the wear of the Cr0.4 FeCr0.9 Cu0.3 alloy. The calculation results of the corrosion-wear tests reveal that the total material loss of the Cr0.8 alloy under corrosion-wear conditions was significantly greater than the sum of pure corrosion and pure wear, indicating a greater synergistic effect between corrosion and wear. Compared with that of the Cr0.8 alloy, the corrosion-wear loss rates of the Cr0.9 and Cr1.0 alloys are lower. The Cr0.9 alloy was able to form a stable passivation film, effectively balancing the interaction between corrosion and wear.