Hydrogen in chromium: influence on corrosion potential and anodic dissolution in neutral NaCl solution

摘要

The influence of hydrogen charging, outgassing, pickling and passivation of mechanically polished chromium was investigated with respect to corrosion potential and anodic dissolution in 0.3 M NaCl solution. Secondary ion mass spectroscopy measurements were used to detect hydrogen after hydrogen charging by means of cathodic polarization. The results show that hydrogen in chromium decreases the corrosion potential and increases the anodic dissolution rate.