electrochemical passivation

After hydrogen injection and film formation at different passive potentials, the AC of the passive film has been measured and the results show that the capacitance and adulterated concentration of the film are decreased, but the flat band potential is increased with the increment of passive potential.

对未充氢的试样，随钝化电位的升高，钝化膜的施主浓度降低而平带电位则升高。