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中文摘要：
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304不锈钢钝化膜在酸、碱性溶液中的半导体导电行为。研究表明，304不锈钢钝化膜在不同溶液体系中表现出不同的导电特征，在5％。H2SO4溶液中，呈现两个空间电荷层，扫描电位低于0 VSCE，钝化膜呈现P型半导体导电特征。而扫描电位大于0 VSCE，钝化膜呈现n型半导体导电特征。钝化膜在5％NaOH溶液中呈现P型半导体导电特征。在不同溶液中载流子浓度随着浸泡时间的延长变化不大。
英文摘要：
The semiconducting behavior of 304 stainless steel in acid and base solution was studied by utilizing potential-capacitance and Mott-Schottky analysis. It was pointed out that conducting behaviour of 304 stainless steel in different solution was different. The stainless steel showed double layer of space charge layer in 5%0 sulfuric acid, below 0 VSCE, the steel electrode showed p-type semiconducting behaviour, above 0 VSCE, the steel electrode showed n-type semiconducting behaviour. However, in 5% sodium hydroxide, the electrode showed ptype semiconducting behaviour.With increasing immersion time, the density of charge carriers in different solution changed slightly.
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