摘要
采用电位-时间曲线判断不锈钢表面的活化状态,并通过极化曲线和交流阻抗等测试手段研究了活化程度对不锈钢着色的影响规律。结果表明:不锈钢在35℃的5%的H2SO4溶液中进行活化时,电位会逐渐负移直至趋于平稳,当在其电位达基本稳定60s左右时,不锈钢表面具有较佳和稳定的活化状态,有利于其后着色效果的重现性;对于不同的活化状态,活化越完全时得到的着色膜表现出的耐腐蚀性也越佳。
The activation state of stainless steel was judged by the potential-time curve,and the effect of activation degree on the coloring process was investigated by anodic polarization and EIS（Electrochemical Impedance Spectroscopy） test.The results showed that when the stainless steel specimens were activated by immersed in a 5% H2SO4 solution at 35℃,the potential decreased firstly,and then reached stability gradually.The stainless steel specimens can reach a good and stable activation state after keeping the stable potential value for about 60s,which is positive for the repeatability of coloring.The coloring film showed better corrosion resistance for the completely activated samples.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2012年第3期89-92,96,共5页
Journal of Materials Engineering
