| 高含沙水流用水轮机叶片表面热喷涂WC/Co涂层的性能 |
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| 引用本文： | 吴韬,陈小明,奚南,厉晗,俞立涛,石淑琴.高含沙水流用水轮机叶片表面热喷涂WC/Co涂层的性能[J].腐蚀与防护,2020(2):45-49. |
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| 作者姓名： | 吴韬 陈小明 奚南 厉晗 俞立涛 石淑琴 |
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| 作者单位： | 浙江机电职业技术学院;水利部杭州机械设计研究所;浙江省水利水电装备表面工程技术研究重点实验室;浙江立思能源科技股份有限公司;眼力健（杭州）制药有限公司 |
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| 摘 要： | 通过高速火焰喷涂技术(高速氧-燃气喷涂,HVOF)在水轮机叶片用06Cr13不锈钢表面喷涂WC/Co涂层。采用金相显微镜、硬度计、万能试验机分析了WC/Co涂层的孔隙率、显微硬度及其与基体的结合强度;并在高含沙水流环境中通过冲蚀、汽蚀试验测试WC/Co涂层的耐冲蚀性能和耐汽蚀性能。结果表明:WC/Co涂层的孔隙率、显微硬度及其与基体的结合强度分别为0.68%、1211HV、70MPa;WC/Co涂层具有优良的耐冲蚀性能,冲蚀后其磨损量仅为06Cr13不锈钢基体的0.18倍;WC/Co涂层具有良好的致密度、结合力及强韧性,因此涂层也具有优良的耐汽蚀性能。
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| 关 键 词： | 高含沙水流 高速氧-燃气喷涂(HVOF) WC/Co涂层 |
Properties of a Thermal Spraying WC/Co Coating on Surface of Turbine Blade Used in High Sediment Flow |
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| WU Tao,CHEN Xiaoming,XI Nan,LI Han,YU Litao,SHI Shuqin.Properties of a Thermal Spraying WC/Co Coating on Surface of Turbine Blade Used in High Sediment Flow[J].Corrosion & Protection,2020(2):45-49. |
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| Authors: | WU Tao CHEN Xiaoming XI Nan LI Han YU Litao SHI Shuqin |
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| Affiliation: | (Zhejiang Institute of Mechanical and Electrical Engineering,Hangzhou 310053,China;Hangzhou Mechanical Design Research Institute,Ministry of Water Resource,Hangzhou 310012,China;Key Laboratory of Resrarch on Hydraulic and Hydro-Power Equipment Surface Engineering Technology of Zhejiang Province,Hangzhou 310012,China;Zhejiang Lisi Energy Technology Co.,Ltd.,Hangzhou 310051,China;AMO(Hangzhou)Co.,Ltd.,Hangzhou 310018,China) |
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| Abstract: | A WC/Co coating was sprayed on the surface of 06 Cr13 stainless steel for turbine blade by means of high velocity flame spraying(also high velocity oxygen fuel,HVOF)technique.Metallographic microscope,hardness tester and universal testing machine were used to analyze the porosity,microhardness of the WC/Co coating and its bonding strength with substrate.The erosion resistance and cavitation resistance of the WC/Co coating were tested by erosion and cavitation tests in an environment of high sediment flow.The results showed that the porosity,microhardness of the WC/Co coating and its bonding strength with substrate were 0.68%,1211 HV,70 MPa,respectively.The WC/Co coating had excellent erosion resistance,its abrasion loss was only 0.18 times that of06 Cr13 stainless steel substrate after erosion.The WC/Co coating had good density,adhesion,strength and toughness,so the coating also had excellent cavitation resistance. |
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| Keywords: | high sediment flow high velocity oxygen fuel(HVOF) WC/Co coating |
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