| 灰口铸铁等离子热喷焊WC/Ni基涂层组织和性能研究 |
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| 引用本文： | 赵彬,卢金斌,周留洋,彭竹琴,侯应黎.灰口铸铁等离子热喷焊WC/Ni基涂层组织和性能研究[J].郑州纺织工学院学报,2012(3):39-41,75. |
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| 作者姓名： | 赵彬 卢金斌 周留洋 彭竹琴 侯应黎 |
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| 作者单位： | [1]中原工学院,郑州450007 [2]洛阳朗力硬面材料有限公司,河南洛阳471000 |
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| 基金项目： | 河南省基础与前沿技术研究计划项目（072300440020） |
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| 摘 要： | 在HT250表面采用等离子喷焊工艺制备了碳化钨/镍基合金复合涂层,并对涂层的宏观形貌、微观组织和显微硬度进行了分析.结果表明：复合涂层与基体形成冶金结合,其中WC均匀地分布在涂层的中底部,而在WC附近形成了强化相Fe3W3C,涂层的耐磨性得到了改善;界面处的HT250在快速冷却过程中,发生淬火反应,部分转变为马氏体;涂层的显微硬度在570～870HV0.2之间,明显高于基体硬度.
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| 关 键 词： | 等离子喷焊 HT250 显微硬度 组织 WC |
Sdudy on Composite Coatings Prepared by Plasma Spray Welding on Grey Cast Iron |
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| ZHAO Bin,LU Jin-bin,ZHOU Liu-yang,PENG Zhu-qin,HOU Ying-li.Sdudy on Composite Coatings Prepared by Plasma Spray Welding on Grey Cast Iron[J].Journal of Zhengzhou Textile Institute,2012(3):39-41,75. |
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| Authors: | ZHAO Bin LU Jin-bin ZHOU Liu-yang PENG Zhu-qin HOU Ying-li |
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| Affiliation: | 1.Zhongyuan University of Technology,Zhengzhou 450007; 2.Luoyang Langli Hard Surfacing Company Limited,Luoyang 471000,China) |
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| Abstract: | The WC/Ni-based composite coatings are sprayed on the surface of HT250 by plasma spray welding.The analysis on macrostructure and microstructure of the coatings are carried out.The results show that metallurgical bonding forms between the coatings and the substrate,and WC mainly well-distributed in the middle and bottom of the coatings,and has formed strengthening phase Fe3W3C,so the wear resistance of composite coatings is improved;When the surface of HT250 cooled,and appeared quenching reaction from high temperature to room temperature rapidly,finally the majority turned to martensite;The microhardness of composite coatings is about 570～870 HV0.2,and is higher than the substrate obviously. |
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| Keywords: | plasma spray welding HT250 microhardness microstructure WC |
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