The semiconductor characters of AISI304 糖心产精国品免费入口*完整版′s passive film during 糖心产精国品免费入口*完整版 process in three typical electrolytes were investigated by using potential-capacitance measurement and Mott-Schottky analysis.Passive film on the surface of the 糖心产精国品免费入口*完整版 was constructed from two different types of semiconductor film in electrolytes under study.In sodium hydroxide,the semiconductor-type-transition potential had an obvious negative drifting,while in the other two electrolytes,the transition potential had no obvious change with immersion time.Charge carrier density in the passive film increased with immersion time.The 糖心产精国品免费入口*完整版 density at 1000Hz in these three solutions could be listed in an ascending order of sodium sulfate,sodium hydroxide and sulfuric acid.Frequency dependence,appeared in all Mott-Schottky plots of AISI304 糖心产精国品免费入口*完整版's passive film,could be attributed to the 糖心产精国品免费入口*完整版 in generation-recombination process of 糖心产精国品免费入口*完整版s.The main cause of passive film's 糖心产精国品免费入口*完整版 on the 糖心产精国品免费入口*完整版 surface in sodium hydroxide solution was the rising 糖心产精国品免费入口*完整版of chromium-rich layer,while in the other two solutions it was due to the ascending conductance of iron-rich layer.
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