| 摘要: |
| 为提高马氏体不锈钢（0Cr13Ni4Mo）的表面硬度及耐磨性能，对不锈钢表面进行高焓等离子喷涂WC10Co4Cr强化，对涂层进行组织观察和物相组成分析，并在不同温度下进行了摩擦磨损试验。研究表明：WC10Co4Cr涂层组织致密，主要由WC物相构成，另外还有少量的W2C和Co25Cr25W8C2。在室温和高温（400 ℃）时，WC10Co4Cr涂层均具有较低的摩擦因数。室温时，基体的磨损机制主要以粘着磨损和磨粒磨损为主。WC10Co4Cr涂层其磨损机制主要以微切削为主。400 ℃条件下，不锈钢基体的磨损机理主要以粘着磨损和剥层为主，磨痕边缘部位主要以磨粒磨损为主。WC10Co4Cr涂层试样的磨损机制主要以磨粒磨损为主，伴随有剥层现象出现。 |
| 关键词: 高焓等离子喷涂 WC10Co4Cr 微观结构 耐磨性能 |
| DOI：10.11933/j.issn.1007-9289.2015.06.012 |
| 分类号: |
| 基金项目: |
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| Wear Resistance of High Enthalpy Plasma Sprayed WC-10Co4Cr Coating |
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CHEN Xiaoming, ZHOU Xialiang, WU Yanming, WANG Ya, MAO Pengzhan, WANG Lirong1,2
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1.Standard & Quality Control Research Institute, Ministry of Water Resources;2. Hangzhou Mechanical Design Research Institute, Ministry of Water Resources
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| Abstract: |
| To improve the martensitic stainless steel (0Cr13Ni4Mo) surface hardness and wear resistance, the stainless steel was strengthened by high enthalpy plasma spraying WC10Co4Cr coating. The microstructure and phase composition of the coating were characterized. Wear tests were carried out at different temperatures. Results show that the WC10Co4Cr coating is density and consists mainly of WC phase, while a small amount of W2C and Co25Cr25W8C2 exists in the coating. The WC10Co4Cr coating has lower friction coefficient both at room temperature and high temperature (400 ℃). At room temperature, the wear mechanism of matrix mainly includes adhesive wear and abrasive wear, and the wear mechanism of WC10Co4Cr coating mainly includes microcutting. Under the condition of 400 ℃, Wear of stainless steel in the center grinding mark is most caused by adhesive wear and peeling, but abrasive wear in the edge area of grinding crack . The wear mechanism of WC10Co4C sample is abrasive wear with slight peeling. |
| Key words: high enthalpy plasma spraying WC10Co4Cr microstructure wear resistance |
