采用电位-电容法及Mott-Schottky分析技术研究了自腐蚀电位条件下防锈油膜在3%氯化钠溶液中失效过程的导电机制转变行为.研究表明，防锈油膜失效过程中存在半导体导电特征，随着浸泡时间的延长，防锈油膜从浸泡初期的p型半导体转变为n型半导体，防锈油膜逐渐出现两个空间电荷过渡层，并且计算了不同转变时期防锈油膜中的电子给体(ND)和电子受体(NA)的密度.
In this paper,conducting transformation of a rust preventive oil film on 304 stainless steel in 3% NaCl solution under potential was studied by means of potential-capacitance method and Mott-Schottky analysis.It was pointed out that there existed semiconducting behaviour of the rust preventive oil film during its degradation.With increasing immersion time the rust preventive oil film transformed from p type semiconductor at the early stage of immersion to n type semicon- ductor,two transition layers of space charge gradually formed in the rust preventive oil film.ND and NA of oil film in different transition process were also calculated.
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