| 铁在含Cl^—的NO3^——H2SO4体系中的钝化与孔蚀 |
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| 引用本文： | 杨华铨,陈慎豪.铁在含Cl^—的NO3^——H2SO4体系中的钝化与孔蚀[J].北京大学学报(自然科学版),1991,27(2):177-183. |
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| 作者姓名： | 杨华铨 陈慎豪 |
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| 作者单位： | 北京大学化学系
(杨华铨，蔡生民，区友雄)，山东大学化学学院
(陈慎豪)，山东大学化学学院(黄红香) |
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| 摘 要： | 用动电势扫描和交流阻抗方法研究纯铁在0.05mol/l H_2SO_4+0.1mol/l NaNO_3和0.05mol/lH_2SO_4+0.1mol/l NaNO_3+0.01mol/l NaCl溶液体系中的电化学行为。讨论了在酸性介质中,在阳极钝化的电势范围内,NO_3~-可抑制Cl~-对Fe表面的孔蚀作用;当NO_3~-]》Cl~-]时,在上述电势范围内Fe表面呈钝化态。
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| 关 键 词： | 铁 钝化 孔蚀 氯离子 硝酸 钝化膜 |
Research in Passive Film and Its Pitting of Iron in Nitric-Sulfuric Acid Solution Systems Containing Cl~- Ion |
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| YANG Huaquan,CAI Shengmin,OU Youxiong.Research in Passive Film and Its Pitting of Iron in Nitric-Sulfuric Acid Solution Systems Containing Cl~- Ion[J].Acta Scientiarum Naturalium Universitatis Pekinensis,1991,27(2):177-183. |
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| Authors: | YANG Huaquan CAI Shengmin OU Youxiong |
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| Abstract: | The potentiodynamic sweep and A. C. impedance methods were used to study the electrochemical behavior for the pure iron in 0.05mol/l H2SO4+0.1mol/l NaNO3 and 0.05mol/l H2SO4 + 0.1 mol/l NaNO3+ 0.01mol/l NaCl solution systems. In acidic medium, NO3- inhibits pitting effects of Cl- on iron surface in the potential region of anodic passivation. If NO-3]>>Cl-], the passive state is established on the iron surface in the above-mentioned potential range. |
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| Keywords: | Iron Nitricacid CI-ion Passive film Pitting |
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