| 激光熔覆Ni/WC复合涂层的组织和性能 |
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| 引用本文： | 吴萍,姜恩永,周昌炽,唐西南.激光熔覆Ni/WC复合涂层的组织和性能[J].中国激光,2003,30(4):357-360. |
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| 作者姓名： | 吴萍 姜恩永 周昌炽 唐西南 |
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| 作者单位： | 1. 天津大学,理学院现代材料物理研究所,天津,300072;天津大学,先进陶瓷与加工技术教育部重点实验室,天津,300072
2. 清华大学材料科学与工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 10 4 0 0 8)，教育部留学回国人员科研启动基金资助项目，天津大学教育振兴行动计划支持项目 |
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| 摘 要： | 采用激光熔覆方法在A3钢基体上制备Ni/WC复合涂层 ,研究了不同激光功率下复合涂层中WC颗粒的形貌与分布及其对涂层耐磨性能的影响。结果表明 ,在Ni/WC复合涂层中 ,合理的激光功率使WC颗粒部分熔化 ,并在颗粒周围重新凝固并析出针状碳化物 ,这既有利于提高涂层的硬度又能使未熔化的WC颗粒与涂层基体合金牢固结合。
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| 关 键 词： | 金属学 Ni/WC复合涂层 激光熔覆 耐磨性 |
| 收稿时间： | 2002/9/20 |
Microstructure and Properties of Ni/WC Composite Coating Prepared by Laser Cladding |
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| WU Ping ,JIANG En yong ,ZHOU Chang chi ,TANG Xi nan Institute of Advanced Materials Physics,School of Science,Key Lab of Advanced Ceramics and Machining Technology for Ministry of Education,Tianjin University,Tianjin ,China.Microstructure and Properties of Ni/WC Composite Coating Prepared by Laser Cladding[J].Chinese Journal of Lasers,2003,30(4):357-360. |
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| Authors: | WU Ping JIANG En yong ZHOU Chang chi TANG Xi nan Institute of Advanced Materials Physics School of Science Key Lab of Advanced Ceramics and Machining Technology for Ministry of Education Tianjin University Tianjin China |
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| Affiliation: | WU Ping 1,2,JIANG En yong 1,2,ZHOU Chang chi 3,TANG Xi nan 3 1Institute of Advanced Materials Physics,School of Science,2Key Lab of Advanced Ceramics and Machining Technology for Ministry of Education,Tianjin University,Tianjin 300072,China 3Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China |
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| Abstract: | Ni/WC composite coatings were prepared on A3 steel by laser cladding. The morphology and distribution of WC particles under the different laser power and their influences on the wear resistance properties were studied. The results showed that under the appropriate laser power WC particles partially dissolved, with the epitaxially grown needle like carbide around them. Undissolved WC particles are combined strongly with the coating matrix, which has improved wear resistance when compared with the Ni based alloy coating. |
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| Keywords: | metallogrophy Ni/WC composite coating laser cladding wear resistance property |
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