| 聚苯胺对2Cr13不锈钢无氧钝化的机理探讨 |
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| 引用本文： | 钟莲,胡捷,朱华,肖书虎,甘复兴. 聚苯胺对2Cr13不锈钢无氧钝化的机理探讨[J]. 武汉大学学报(理学版), 2006, 52(2): 154-158 |
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| 作者姓名： | 钟莲 胡捷 朱华 肖书虎 甘复兴 |
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| 作者单位： | 1. 武汉大学,资源与环境科学学院,湖北,武汉,430072
2. 武汉大学,资源与环境科学学院,湖北,武汉,430072;中国科学院金属研究所/金属腐蚀与防护国家重点实验室,辽宁,沈阳,110016 |
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| 摘 要： | 将掺杂态聚苯胺（PANI）制备成单独的PANI膜电极,研究了该电极在敞开、除氧条件下,在酸性介质中的性质及其与2Cr13不锈钢的电化学偶合行为．结果发现无论是在有氧还是除氧条件下,PANI膜与2Cr13不锈钢以面积比1：1偶合时,PANI均能使2Cr13不锈钢稳定钝化．根据电化学实验及光电子能潜（XPS）表征结果,提出了掺杂态PANI对2Cr13不锈钢的防腐蚀作用来自伽伐尼阳极保护作用,PANI膜在酸性溶液中通过交替电化学脱杂与掺杂为金属钝化提供了必须的阳极电流．
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| 关 键 词： | 聚苯胺 不锈钢 电化学偶合 钝化 机理 |
| 文章编号： | 1671-8836(2006)02-0154-05 |
| 修稿时间： | 2005-11-16 |
A Mechanism of Corrosion Protection of Polyaniline on 2Cr13 Stainless Steel in Acidic Solution |
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| ZHONG Lian,HU Jie,ZHU Hua,XIAO Shuhu,GAN Fuxing. A Mechanism of Corrosion Protection of Polyaniline on 2Cr13 Stainless Steel in Acidic Solution[J]. JOurnal of Wuhan University:Natural Science Edition, 2006, 52(2): 154-158 |
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| Authors: | ZHONG Lian HU Jie ZHU Hua XIAO Shuhu GAN Fuxing |
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| Abstract: | In this work,a separate doped PANI(polyaniline) film electrode has been made.The electrochemical behaviors of the PANI film electrode,and the galvanic interactions between the PANI film(electrode) and 2Cr13 stainless steel in no-deaerated and N_(2)-deaerated acidic solution have been also studied.The results show that PANI film can passivate 2Cr13 stainless steel both in the N_(2)-deaerated and no-deaerated solution.Based on the experimental results of the electrochemistry and X-ray photoelectron spectroscopy (XPS),a mechanism for galvanic anodic protection for the passivation of 2Cr13 stainless steel has been proposed: the excess oxidative charge stored in the PANI and the "dedoping/re-doping process" of the doped PANI in the acid environment provides the required anodic current for steel passivation. |
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| Keywords: | polyaniline stainless steel galvanic coupling passivation mechanism |
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