有色金属科学与工程2016，Vol.7Issue(4)：40-44,5.DOI:10.13264/j.cnki.ysjskx.2016.04.007
激光功率对碟阀表面熔覆Ni基合金涂层性能的影响
Effects of laser power on performance of cladding Ni-based alloy coating on surface of butterfly valve
摘要
Abstract
The effect of laser power on the dilution rate, microstructure, corrosion resistance and hardness of the coating were investigated by adopting semiconductor laser to laser clad Ni based alloy coating on 2205 duplex stainless steel and by means of SEM, electrochemical synthesis tester and hardness tester. The results show that dilution rate of the coatings increases with the increase of the laser power and there is more convection and diffusion of the cladding layer and the matrix elements; cladding layer resistance corrosion resistance decreases with the increase of the laser power when laser power is 2.7 kW, the cladding layer of the self corrosion potential is -0.46 mV which is at minimum, and corrosion current is 3.47×10-5 A/cm2 which is at minimum. The hardness test results show that the hardness of the laser clad Ni based alloy coating is up to 680 HV, which is about 2.5 times that of the matrix alloy.关键词
激光熔覆/Ni基合金/稀释率/显微硬度/耐腐蚀性能Key words
laser cladding/Ni based alloy/dilution rate/micro hardness/corrosion resistance分类
矿业与冶金引用本文复制引用
吴强,刘政,林继兴,童先,白光珠,赵运才..激光功率对碟阀表面熔覆Ni基合金涂层性能的影响[J].有色金属科学与工程,2016,7(4):40-44,5.基金项目
国家自然科学基金资助项目(50965008)；江西省教育厅科技重点资助项目(GJJ11021) （50965008）
