| 电火花沉积 Fe 基涂层的组织及耐磨性能 |
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| 引用本文： | 董晨竹,刑斌赛,郝杰,余龙芬,高玉新,方淳.电火花沉积 Fe 基涂层的组织及耐磨性能[J].表面技术,2013,42(2):37-39. |
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| 作者姓名： | 董晨竹 刑斌赛 郝杰 余龙芬 高玉新 方淳 |
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| 作者单位： | 台州学院机械工程学院 |
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| 基金项目： | 浙江省大学生科技计划项目(2011R428020);浙江省科技计划项目(2012C21107) |
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| 摘 要： | 通过电火花沉积技术在P20模具钢表面制备了Fe基涂层,利用SEM,XRD及摩擦磨损试验机等分析了涂层的组织结构、显微硬度及耐磨性能。结果表明:电火花沉积Fe基涂层组织均匀、致密;涂层中靠近界面处的组织为柱状枝晶,而涂层中上部组织为超细晶粒。涂层的平均硬度为637.1HV0.1,相比基体提高了1倍;涂层耐磨性优于基体,涂层中弥散分布的Cr7C3,CrB及Fe3C等硬质是Fe基涂层硬度及耐磨性提高的主要原因。涂层的磨损机理主要为磨粒磨损的微切削和疲劳磨损。
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| 关 键 词： | 电火花沉积 Fe基合金涂层 显微组织 耐磨性能 |
| 收稿时间： | 2012/10/19 0:00:00 |
| 修稿时间： | 2012/11/20 0:00:00 |
Microstructure and Wear Properties of Fe-based Coating Prepared by Electrospark Deposition |
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| DONG Chen-zhu,XING Bin-sai,HAO Jie,YU Long-fen,GAO Yu-xin and FANG Chun.Microstructure and Wear Properties of Fe-based Coating Prepared by Electrospark Deposition[J].Surface Technology,2013,42(2):37-39. |
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| Authors: | DONG Chen-zhu XING Bin-sai HAO Jie YU Long-fen GAO Yu-xin and FANG Chun |
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| Affiliation: | (College of Mechanical Engineering,Taizhou University,Taizhou 318000,China) |
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| Abstract: | The Fe-based alloy coating was produced on the surface of P20 steel plate by electro-spark deposition ( ESD) technique, and the microstructure and wear properties of the coating were investigated by SEM, XRD and friction and wear test machine. The results show that the coating has homogenous and dense structure with fine dendritic structure in the bottom of the coating and ultra-fine grains in the middle and upper coating. The average hardness of the coating is 637 . 1 HV0 . 1 .The wear resistance of the ESD coating is much higher than the substrate. Dispersion strengthening result from hard phases such as Cr7C3,CrB,Fe3C is the main factor leading to high hardness as well as wear resistance of the coating. The wear mechanism are mainly abrasive wear and fatigue wear. |
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| Keywords: | ESD Fe-based alloy coating microstructure wear properties |
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