| 20号碳钢在不同溶液中的半导体导电行为 |
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| 引用本文： | 钟庆东,王超,鲁雄刚,周国治.20号碳钢在不同溶液中的半导体导电行为[J].腐蚀科学与防护技术,2008,20(4):265-267. |
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| 作者姓名： | 钟庆东 王超 鲁雄刚 周国治 |
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| 作者单位： | 上海大学,材料科学与工程学院,上海,200072 |
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| 基金项目： | 国家自然科学基金
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教育部新世纪NCET-07-0536教育部创新团队IRT0739项目资助 |
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| 摘 要： | 采用电位—电容法结合Mott-Schottky分析技术研究了自腐蚀电位条件下20号碳钢在酸、碱和盐溶液中的半导体导电行为.结果表明，在腐蚀性介质作用下，随着时间和扫描电位的增加，20号钢空间电荷层电容（Capacitance of space charge layer-Csc）变化规律不同.20号碳钢在5‰硫酸溶液和5%硫酸钠溶液中呈现p型半导体导电特征，而在5%氢氧化钠溶液中，20号钢表面形成了两个空间电荷层结构，呈n型半导体特征.
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| 关 键 词： | 碳钢 导电机制 P型半导体 N型半导体 |
| 收稿时间： | 2007-01-27 |
| 修稿时间： | 2007-08-14 |
SEMICONDUCTING BEHAVIOR OF No.20 CARBON STEEL IN ELECTROLYTE SOLUTIONS |
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| ZHONG Qing-dong,WANG Chao,LU Xong-gang,ZHOU Guo-zhi.SEMICONDUCTING BEHAVIOR OF No.20 CARBON STEEL IN ELECTROLYTE SOLUTIONS[J].Corrosion Science and Protection Technology,2008,20(4):265-267. |
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| Authors: | ZHONG Qing-dong WANG Chao LU Xong-gang ZHOU Guo-zhi |
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| Affiliation: | School of Materials Science and Engineering;Shanghai University;Shanghai 200072 |
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| Abstract: | In this paper,the semiconducting behavior of No.20 carbon steel in acid,alkali and salt solutions was studied by utilizing potential-capacitance and Mott Schottky analysis.It was pointed out that the capacitance variation of the space charge layer on No.20 carbon steel in different solutions was different.The carbon steel showed p-type semiconducting behavior in 5‰ sulfuric acid and 5% sodium sulfate solution. However,the carbon steel showed n-type semiconducting behavior in 5% sodium hydroxide,and forming two space charge layers. |
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| Keywords: | carbon steel conducting mechanism P-type semiconductor n-type semiconductor |
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