A novel anti-corrosion coating for magnesium alloy
来源期刊：中国有色金属学报(英文版)2005年第z3期
论文作者：黄巍 李荻 郑天亮
文章页码：381 - 387
Key words：megnesium alloy； coating； anti-corrosion； mechanism； property
Abstract: A novel enviromental protective water based metallic coating were prepared on the surface of AZ91D magnesium alloy. The properties and structure of the coating were investigated by adhension test, hardness test, heat resisting test, neutral salt spray test and scanning electron microscopy (SEM). The results show that the coating has a stepped structure which can achieve good adhesion of first-grade, heat resistance temperature of 400℃, hardness of HV_ 0.50/30210 and anti-corrosion time of 250h in salt spray test. Meanwhile, the film forming and corrosion mechanism of the coating were also put forward based on the results of the Fourier transform infrared spectroscopy (FTIR) test and electrochemical impedance spectroscopy (EIS) test.
