海水抽水蓄能机组过流部件表面电弧喷涂涂层性能研究  

Study on the Corrosion Protection Performance of Arc Spraying on the Surface of Water-passing Components of Seawater Pumped Storage Unit

作　　者：刘玉鑫 葛光男 吴双杰[5] 贾朋刚 霍岩 文道维[1,3] LIU Yuxin;GE Guangnan;WU Shuangjie;JIA Penggang;HUO Yan;WEN Daowei(Hadong National Hydropower Equipment Engineering Technology Research Center Company Limited,Harbin 150028,China;Harbin Electric Group Company Limited,Harbin 150028,China;Harbin Electric Machinery Company Limited,Harbin 150040,China;School of Material Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;Ningbo Institute of Materials Technology&Engineering,CAS,Ningbo 315201,China)

机构地区：[1]哈动国家水力发电设备工程技术研究中心有限公司,哈尔滨150040 [2]哈尔滨电气集团有限公司,哈尔滨150028 [3]哈尔滨电机厂有限责任公司,哈尔滨150040 [4]哈尔滨工业大学材料科学与工程学院,哈尔滨150001 [5]中国科学院宁波材料技术与工程研究所,浙江宁波315201

出　　处：《大电机技术》2021年第5期88-91,98,共5页Large Electric Machine and Hydraulic Turbine

基　　金：国家重点研发计划资助(2017YFB0903700)。

摘　　要：采用电弧喷涂技术制备了Al、75Zn25Al及NiCr涂层,通过基本性能测试、微观形貌表征及耐中性盐雾试验,研究了三种涂层在海水抽水蓄能机组过流部件中的腐蚀防护性能。研究结果表明,75Zn25Al涂层与基体结合力偏低,耐腐蚀性能较差,Al及NiCr涂层与基体结合力较高,具有极好的耐腐蚀性能,且NiCr涂层具有较高的耐磨损及冲刷性能。NiCr涂层可推荐应用于活动导叶中、下轴颈以及顶盖、底环过流面等部件的腐蚀防护,Al涂层可推荐应用于尾水管、蜗壳等部件的腐蚀防护。The Al,75 Zn25 Al and Ni Cr coatings were prepared by arc spraying technology.The corrosion protection performance of the three coatings on the flow passage parts of the sea water pumped storage unit was studied through the basic performance test,micromorphology characterization and neutral salt spray resistance test.The results show that the adhesion strength between 75 Zn25 Al coating and matrix is low,and the corrosion resistance is poor.The adhesion strength between Al and Ni Cr coating and matrix is high,which has excellent corrosion resistance.Ni Cr coating can be recommended to apply to the corrosion protection of the middle and lower journal of the movable guide vane as well as the flow passage surface of the top cover and bottom ring.Al coating can be recommended to apply to the corrosion protection of the draft tube,volute and other components.

关 键 词：抽水蓄能机组 过流部件 电弧喷涂 腐蚀防护 

分 类 号：TK730.5[交通运输工程—轮机工程]