超音速火焰喷涂Cr3C2-NiCr涂层的显微组织与磨损性能
Microstructure and Wear Properties of High Velocity Oxygen Fuel Sprayed Cr3C2-NiCr Coating
摘 要
采用超音速火焰喷涂技术在H13钢基体上制备Cr3C2-NiCr涂层，研究了涂层的显微组织、物相组成及摩擦磨损性能，并探讨了磨损机理。结果表明：Cr3C2-NiCr涂层与H13钢基体结合紧密，厚度约为340 μm；涂层由Cr3C2硬质相、NiCr黏结相及少量Cr7C3相组成，组织致密，孔隙率为0.63%；Cr3C2-NiCr涂层与H13钢的稳定摩擦因数分别为0.90，0.75，涂层磨痕深度及磨损率仅为H13钢的1/2， 涂层耐磨性能较好；Cr3C2-NiCr涂层的磨损机理主要为磨粒磨损和疲劳磨损。
金属陶瓷复合涂层
微观结构
摩擦磨损
high velocity oxygen fuel spraying
metal-ceramic composite coating
microstructure
friction and wear
Abstract
The Cr3C2-NiCr coating was prepared on H13 steel substrate by high velocity oxygen fuel spraying technique. The microstructure,phase composition and friction and wear properties of the coating were studied, and the wear mechanism was discussed. The results show that the Cr3C2-NiCr coating with a thickness of about 340 μm was closely combined with the H13 steel substrate. The coating was composed of Cr3C2 hard phase, NiCr bonding phase and a small amount of Cr7C3, and the structure was dense with a porosity of 0.63%. The stable friction coefficients of the Cr3C2-NiCr coating and H13 steel were 0.90 and 0.75, respectively, and the wear track depth and wear rate of the coating were only half that of H13 steel, showing that the coating had relatively good wear resistance. The main wear mechanism of the Cr3C2-NiCr coating was abrasive wear and fatigue wear.
中图分类号 TG174.2 DOI 10.11973/jxgccl202004007
所属栏目 试验研究
基金项目
收稿日期 2019/9/23
修改稿日期 2020/3/3
网络出版日期
作者单位点击查看
备注师玮(1995-),女,河南安阳人,硕士研究生
引用该论文: SHI Wei,YANG Weihua,WU Yuping. Microstructure and Wear Properties of High Velocity Oxygen Fuel Sprayed Cr3C2-NiCr Coating[J]. Materials for mechancial engineering, 2020, 44(4): 35～39
师玮,杨伟华,吴玉萍. 超音速火焰喷涂Cr3C2-NiCr涂层的显微组织与磨损性能[J]. 机械工程材料, 2020, 44(4): 35～39
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【5】AHMED R,VOURLIAS G,ALGOBURI A,et al.Comparative study of corrosion performance of HVOF-sprayed coatings produced using conventional and suspension WC-Co feedstock[J]. Journal of Thermal Spray Technology, 2018, 27(8):1579-1593.
【6】CHENG J B, WANG Z H, XU B S. Wear and corrosion behaviors of FeCrBSiNbW amorphous/nanocrystalline coating prepared by arc spraying process[J]. Journal of Thermal Spray Technology, 2012, 21(5):1025-1031.
【7】DINH V C, NGUYEN T P, DOAN T H, et al. Optimizating spray parameters of high velocity oxy fuel (HVOF) for Cr3C2-NiCr coating[J]. Applied Mechanics and Materials, 2019, 889:168-176.
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【19】郭永明, 李绪强, 王海军, 等. 超音速等离子喷涂NiCr-Cr3C2/Mo复合涂层的高温摩擦磨损性能[J]. 中国表面工程, 2012,25(5):31-36.
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【22】ARCHARD J F. Contact and rubbing of flat surfaces[J]. Journal of Applied Physics, 1953, 24(8):981-988.
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【24】刘建金, 崔照雯, 贾成厂, 等. 超音速火焰喷涂WC-12Co涂层的滑动磨损特性[J]. 工程科学学报, 2015, 37(12): 1617-1623.
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