[1]任 婧,张效宾.doi: 10.3969/j.issn.1001-3849.2026.06.012激光熔覆FeCoCrNiMo高熵涂层耐磨与耐蚀性能[J].电镀与精饰,2026,(06):96-104.
　REN Jing,ZHANG Xiaobin.Wear and corrosion resistance of FeCoCrNiMo high entropy coating by laser cladding[J].Plating & Finishing,2026,(06):96-104.
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doi: 10.3969/j.issn.1001-3849.2026.06.012激光熔覆FeCoCrNiMo高熵涂层耐磨与耐蚀性能()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2026年06
页码:
96-104
栏目:
出版日期:
2026-06-30

文章信息/Info

Title:
Wear and corrosion resistance of FeCoCrNiMo high entropy coating by laser cladding
作者:
任 婧1; 张效宾2
(1. 临汾职业技术学院 机电工程学院,山西 临汾 041000 ;2. 临汾职业技术学院 机电系,山西 临汾 041000)
Author(s):
REN Jing1;  ZHANG Xiaobin2
(1. School of Mechanical and Electrical Engineering, Linfen Vocational and Technical College, Linfen 041000, China; 2. Department of Mechanical and Electrical Engineering, Linfen Vocational and Technical College, Linfen 041000, China)
关键词:
激光熔覆; FeCoCrNiMo合金; 涂层; 腐蚀性能; 新能源汽车
Keywords:
laser cladding;  FeCoCrNiMo alloy;  coating;  corrosion performance;  new energy vehicles
分类号:
TQ153；TG174.46
文献标志码:
A
摘要:
优化基于激光熔覆技术制备的FeCoCrNiMo合金涂层的耐腐蚀性能，以提高其在新能源汽车应用中的耐久性和可靠性。研究中的涂层拟用于新能源汽车的发动机和壳体表面，旨在通过提高这些关键部件的耐腐蚀性能来提升整车的使用寿命和稳定性。采用激光熔覆技术制备FeCoCrNiMo合金涂层，并通过调整激光功率、涂层粉末比例等工艺参数，系统研究涂层的表面形貌、微观结构、硬度及其腐蚀行为。研究表明，在激光功率方面，随着功率从1 kW增至3 kW，涂层表面粗糙度降低，孔隙和裂纹显著减少，表面硬度从540 HV0.2提升至670 HV0.2。3 kW功率下，涂层氧化膜增厚最为显著，形成了更厚且均匀的NiO和Cr2O3保护层，有效延缓了腐蚀进程。碳化钨粉末的添加显著提高了涂层硬度，从570 HV0.2增至705 HV0.2，且增强了涂层的耐腐蚀性。特别是含15%WC粉末的D组在3 kW激光功率下表现出最佳的耐腐蚀性，在72 h腐蚀后的氧化层增厚幅度最小，仅为10.1%，且具有良好的稳定性。12 h和72 h腐蚀后的氧化层厚度分别为(126±4)和(139±9) μm。激光熔覆制备的FeCoCrNiMo涂层经过优化后，具有显著的耐腐蚀性能。通过调节激光功率和WC粉末比例，涂层的表面质量、硬度和结构稳定性得到了有效提升，尤其是高功率和适量WC粉末的协同作用进一步优化了涂层的抗腐蚀性能。优化后的涂层能够显著延长新能源汽车部件的使用寿命，具有较好的应用前景。
Abstract:
Optimize the corrosion resistance of FeCoCrNiMo alloy coatings prepared based on laser cladding technology to improve their durability and reliability in new energy vehicle applications. The coating under study is intended for use on the engine and housing surfaces of new energy vehicles, with the aim of improving the corrosion resistance of these key components to enhance the overall service life and stability of the vehicle. FeCoCrNiMo alloy coatings were prepared using laser cladding technology, and the surface morphology, microstructure, hardness, and corrosion behavior of the coatings were systematically studied by adjusting process parameters such as laser power and coating powder ratio. Research has shown that in terms of laser power, as the power increases from 1 kW to 3 kW, the surface roughness of the coating decreases, pores and cracks significantly decrease, and the surface hardness increases from 540 HV 0.2 to 670 HV 0.2. At a power of 3 kW, the coating oxide film thickens the most significantly, forming a thicker and more uniform NiO and Cr 2O3 protective layer, effectively delaying the corrosion process. The addition of WC powder significantly increased the hardness of the coating, from 570 HV 0.2 to 705 HV 0.2, and enhanced the corrosion resistance of the coating. Especially the D group containing 15% WC powder showed the best corrosion resistance at a laser power of 3 kW, with the smallest increase in oxide layer thickness after 72 h of corrosion, only 10.1%, and good stability. The thickness of the oxide layer after 12 h and 72 h of corrosion is (126±4) μm and (139±9) μm, respectively. The FeCoCrNiMo coating prepared by laser cladding has significant corrosion resistance after optimization. By adjusting the laser power and WC powder ratio, the surface quality, hardness, and structural stability of the coating have been effectively improved, especially the synergistic effect of high power and appropriate WC powder has further optimized the corrosion resistance of the coating. The optimized coating can significantly extend the service life of new energy vehicle components and has good application prospects.

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更新日期/Last Update: 2026-06-12