| 基于正交试验的超音速火焰喷涂WC－12Co涂层抗冲蚀性能研究 |
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| 引用本文： | 郭华锋,朱聪聪,赵恩兰,李龙海,于萍,刘磊,杨海峰.基于正交试验的超音速火焰喷涂WC－12Co涂层抗冲蚀性能研究[J].排灌机械工程学报,2022,40(4):419-426. |
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| 作者姓名： | 郭华锋 朱聪聪 赵恩兰 李龙海 于萍 刘磊 杨海峰 |
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| 作者单位： | 1. 徐州工程学院机电工程学院, 江苏 徐州 221018; 2. 中国矿业大学机电工程学院, 江苏 徐州 221116 |
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| 摘 要： | 采用超音速火焰喷涂(high-velocity oxygen-fuel,HVOF)技术制备WC－12Co涂层,利用扫描电子显微镜(scanning electron microscope,SEM)、能谱仪(energy dispersive spectrometer,EDS)表征粉末、磨料、冲蚀前后涂层表面/截面的微观...
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| 关 键 词： | 超音速火焰喷涂 WC-12Co涂层 正交试验 冲蚀率 冲蚀机理 |
| 收稿时间： | 2021-10-12 |
Study on erosion wear resistance of HVOF-sprayed WC-12Co coatings based on Taguchi method |
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| GUO Huafeng,ZHU Congcong,ZHAO Enlan,LI Longhai,YU Ping,LIU Lei,YANG Haifeng.Study on erosion wear resistance of HVOF-sprayed WC-12Co coatings based on Taguchi method[J].Journal of Drainage and Irrigation Machinery Engineering,2022,40(4):419-426. |
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| Authors: | GUO Huafeng ZHU Congcong ZHAO Enlan LI Longhai YU Ping LIU Lei YANG Haifeng |
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| Institution: | 1. School of Mechanical and Electronic Engineering, Xuzhou University of Techology, Xuzhou, Jiangsu 221018, China; 2. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China |
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| Abstract: | WC-12Co coating was prepared by high-velocity oxygen-fuel(HVOF)technology. SEM, EDS were used to characterize the micro-morphology, element distribution and chemical composition of the surface/cross section of the coating before and after erosion. The Taguchi Design of Experiments(DOE)techniques and the erosion tester were used to analyze the effects of erosion distance, impact angle and abrasive mass on the erosion rate of the coating, and the erosion mechanism of the coating was discussed. The results show that the microstructure of WC-12Co coating is uniform and there are a small amount of pores. The bonding mode between coating and substrate is mainly mechanical bonding. The range and variance analysis show that under the existing erosion conditions, the erosion distance has the most significant effect on the erosion rate of the coating, followed by the impact angle and the abrasive mass, and the erosion rate is the smallest at the impact angle of 30°, followed by 60°and 90°. Compared with high impact angle, WC-12Co coating has excellent resistance at low impact angle. The erosion mechanism of the coating at the impact angle of 30° is cutting and ploughing damage, accompanied by a small amount of brittle fracture and spalling, and brittle fracture and fatigue spalling caused by positive hammering at 90°. The depth of peeling pit at 90° is much greater than that of cutting and ploughing at 30°, and the damage is more serious. |
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| Keywords: | high-velocity oxygen-fuel WC-12Co coating Taguchi experiment erosion rate erosion mechanism |
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