| 硅对氩弧熔敷原位制备WC颗粒增强涂层组织及性能的影响 |
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| 引用本文： | 肖逸锋,李雪丰,杜行,许艳飞,贺跃辉. 硅对氩弧熔敷原位制备WC颗粒增强涂层组织及性能的影响[J]. 焊接学报, 2016, 37(9): 13-17 |
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| 作者姓名： | 肖逸锋 李雪丰 杜行 许艳飞 贺跃辉 |
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| 作者单位： | 1.湘潭大学 机械工程学院, 湘潭 411105;湘潭大学 焊接机器人及应用技术湖南省重点实验室, 湘潭 411105 |
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| 基金项目： | 国家自然科学基金资助项目(51401175;51271158)，湖南省自然科学基金资助项目(2015JJ3123;2015JJ5031)，湖南省重点研发计划项目(2015WK3021) |
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| 摘 要： | 通过配制不同硅含量的WC颗粒增强涂层，借助光学显微镜、扫描电镜、X射线衍射仪和磨粒磨损试验机等，对比研究硅对氩弧熔敷原位制备WC颗粒增强涂层组织及性能的影响. 结果表明，当硅含量为0～5%，硅能促进WC形核与长大，抑制Fe3W3C等M6C碳化物的形成. 其中当硅含量为5%时，涂层中WC分布均匀，涂层性能达到最佳，其相对耐磨性达到最高值. 当硅含量继续增加到7.5%以上时，WC颗粒反而细化，且团聚现象明显，涂层耐磨性下降.
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| 关 键 词： | 原位合成 耐磨性 硅含量 WC颗粒 |
| 收稿时间： | 2014-12-24 |
Effects of Si on microstructures and properties of in situ WC reinforced coating |
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| XIAO Yifeng,LI Xuefeng,DU Hang,XU Yanfei and HE Yuehui. Effects of Si on microstructures and properties of in situ WC reinforced coating[J]. Transactions of The China Welding Institution, 2016, 37(9): 13-17 |
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| Authors: | XIAO Yifeng LI Xuefeng DU Hang XU Yanfei HE Yuehui |
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| Affiliation: | 1.School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China;Key Laboratory of Welding Robot and Application Technology of Hunan Province, Xiangtan University, Xiangtan 411105, China2.State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China |
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| Abstract: | Effects of Si on microstructures and properties of WC particles reinforced coating with Si content from 0 to 12.5 wt-% prepared by argon arc cladding were analyzed by optical microscopy, scanning electron microscopy (SEM), X-ray diffractometer (XRD), hardness tester and wear tester. The results show that, when Si content is in range of 0 to 5 wt-%, it can promote the nucleation and growth of the WC and inhibit the growth of Fe3W3C. When Si is added to 5 wt-%, the wear resistance of the coating was 58 times than that of Q235 steel, which was corresponding to WC particles distributing uniformly in the coating. However, as the Si content increased up to 7.5 wt-%, the wear resistance was only 13.9 times than that of Q235 steel due to the WC grain size decreasing and obvious aggregation. |
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| Keywords: | in-situ synthesizing wear resistance silicon content WC particle |
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