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曹金龙,杨学锋.45钢表面激光熔覆Ni60-TiC 陶瓷涂层的耐磨耐蚀性能[J].稀有金属材料与工程(英文),2020,49(2):611~617.[Cao Jinlong and Yang Xuefeng.Wear and Corrosion Resistance of Laser Cladding Ni60-TiC Ceramic Coating on 45 Steel Surface[J].Rare Metal Materials and Engineering,2020,49(2):611~617.]
Wear and Corrosion Resistance of Laser Cladding Ni60-TiC Ceramic Coating on 45 Steel Surface
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Received:March 25, 2019  Revised:May 07, 2019
DOI:
Key words: laser cladding  coating  friction and wear  corrosion resistance
Foundation item:国家自然科学基金(51575234,51872122);中国博士后科学基金(2017M620286);山东省重点研发计划(2018CXGC0809);山东省农机装备研发创新计划(2018YF012)及山东省泰山学者特聘专家
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Cao Jinlong and Yang Xuefeng  
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Abstract:
      The plunger pump plunger (45 steel) works in high friction and high corrosion environment for a long time, and needs to improve the wear resistance and corrosion resistance of its working surface to improve its working efficiency and prolong its service life. The cermet coating was prepared by cladding the Ni60-TiC mixed powder on the surface of 45 steel by laser cladding technology, and the coatings with different TiC contents (0%, 10%, 20%, 30%) were tested for hardness test and friction and wear test. Corrosion resistance test, at the same time, the surface morphology of the coating was characterized and the microhardness was tested. The results show that the addition of TiC to the coating can effectively improve the wear resistance and corrosion resistance of the coating, improve the hardness of the coating and reduce the friction coefficient. Considering the actual working environment of the plunger pump plunger, the wear resistance and corrosion resistance of the coating are best when the TiC content in the coating is 20%-30%.