摘要
对不同载荷下n-SiC/Ni镀层在5%H2SO4溶液中磨损试验进行了研究,通过电化学试验和失重法计算出腐蚀磨损质量损失中各分量的损失,结果表明,随着载荷的增加腐蚀磨损协同作用成为镀层失重的主要原因,并且协同作用中以腐蚀促进磨损为主。腐蚀磨损的极化曲线和表面微观形貌证实了载荷为100N和300N时,镀层在磨损过程中没有出现钝化膜;载荷为200N,镀层表面生成钝化膜,并且钝化膜在摩擦力作用下很快破裂,从而加速腐蚀,接着又形成新的钝化膜。
The wear experiments of nickel-based nano-SiC coatings in 5%H2SO4 solution and under different loadings were studied.Each component of the weight loss of corrosive wear was calculated by using the electrochemical experiments and weight-loss method.The results show that synergism between the corrosion and wear is a main factor which affects the weight loss of coatings with increasing the applied loading,and corrosion promoting wear plays a key role during the synergism processing.When the applied loading of 100 N and 300 N are given,passivation films don＇t appear on the coatings during the wear processing;When the applied loading of 200 N is given,passivation films appear and they are broken quickly by friction,thus inducing corrosion,new films appear again,which is confirmed by polarization curves and surface micro-morphologies of corrosive wear.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2012年第2期82-85,共4页
Surface Technology
关键词
纳米颗粒
镀层
腐蚀磨损
协同作用
nano-particles
coatings
corrosive wear
synergism
