最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

Abstract：The self-healing effect on corrosion behaviors of Pd79Cu4Au2Si10P5 amorphous alloy in 3 wt.% NaCl and 1 mol/L HCl solutions was studied by potentiodynamic polarization experiments and electrochemical impedance spectroscopy (EIS). The results of potentiodynamic polarization experiments show that the self-healing sample has better corrosion resistance than the unrepaired sample, but the as-cast sample has the best corrosion resistance. EIS results show that the Nyquist figures of all the studied samples are composed of one single semi-circle in the state of open circuit potential. The repaired sample has a higher charge transfer reaction resistance than the unrepaired sample, and the as-cast sample has the highest charge transfer reaction resistance. This result is accord with that of potentiodynamic polarization. Surface analysis by SEM shows that all the samples are eroded by pitting corrosion. The pitting density on the surface of the as-cast sample is the least, and that of the un-healing sample is the most.