电化学沉积方法对聚苯胺涂层抗腐蚀性能及电化学性能的影响

材料保护, 2010, 43(8): 10-50.

电化学沉积方法对聚苯胺涂层抗腐蚀性能及电化学性能的影响

任延杰 ^1, , 陈荐 ^2, , 何建军 ^3, , 曾潮流 ^4,

1.长沙理工大学能源与动力工程学院,湖南,长沙,410076;中国科学院金属研究所,腐蚀与防护国家重点实验室,辽宁,沈阳,110016

2.长沙理工大学能源与动力工程学院,湖南,长沙,410076

3.长沙理工大学能源与动力工程学院,湖南,长沙,410076

4.中国科学院金属研究所,腐蚀与防护国家重点实验室,辽宁,沈阳,110016

基金项目: 湖南省长沙市科技局项目(K0802156-11) 湖南省自然科学基金(09JJ3097) 湖南省教育厅项目(09C364)

关键词：抗腐蚀性能 , 电化学性能 , 聚苯胺涂层 , 电化学沉积 , 304不锈钢 , 恒电流 , 循环伏安

Effect of Electrodeposited Methods on Corrosion Resistance and Electrochemical Behavior of Polyaniline Coatings

聚苯胺涂层的电化学特性及耐蚀性与其合成方法及工艺有着密切的关系.在以硫酸为掺杂剂的合成溶液中采用循环伏安和恒电流方法在304不锈钢表面沉积出了聚苯胺涂层.用扫描电镜和电化学方法研究了聚苯胺涂层的表面形貌、抗腐蚀性能和电化学性能.结果表明:聚苯胺涂层表面为多孔结构;开路电位-时间曲线表明,在腐蚀介质中,2种聚苯胺涂层均提高了304不锈钢的腐蚀电位,电化学阻抗谱结果表明,2种聚苯胺涂层在腐蚀初期反应均受扩散步骤控制,对腐蚀介质有一定的阻挡作用,但恒电流方法制备的聚苯胺在浸泡24 h后,表现为基体金属的阻抗谱特征.因此,相对于恒电流方法,循环伏安方法制备的聚苯胺对304不锈钢的钝化能力更强,可为基体提供更好的保护.

参考文献

[1]	De Berry D W .Modification of the electrochemical and corrosion behavior of stainless steels with an electroactive coating[J].Journal of the Electrochemical Society,1985,132:1022-1026.
[2]	Stanchina H S;Gajda W E;Vogelhut W J .The effect of growth rate variation on the conductivity and morphology of polypyrrole thin films[J].J Electron Master,1986,15:145-149.
[3]	Prissanaroon W.;Brack N.;Pigram PJ.;Liesegang J.;Cardwell TJ. .Surface and electrochemical study of DBSA-doped polypyrrole films grown on stainless steel[J].Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films,2002(8):653-662.
[4]	陈泳,唐威,朱绪飞.合成工艺对聚吡咯电导率及可溶性的影响[J].化工时刊,2003(11):42-46.
[5]	Zotti G;Schiavon G;Comisso N .Anion effects on conductivity of isomorphous polypyrrole charge pinning by nucleophillc anions[J].Synthetic Metals,1999,40:309-314.
[6]	Gao Z Q;Bobacka J;Ivaska A .Electrochemical study on the polypyrrole-polyaniline bilayers[J].Synthetic Metals,1993,55-57:1477-1482.
[7]	颜流水,魏洽,王承宜,刘冬如,马海永.聚苯胺膜的电化学合成机理及掺杂行为[J].功能材料,2000(05):548-550.
[8]	Wessling B. .SCIENTIFIC AND COMMERCIAL BREAKTHROUGH FOR ORGANIC METALS[J].Synthetic Metals,1997(1/3):1313-1318.
[9]	Kraljic M;Mandic Z .Inhibition of steel corrosion by polyaniline coatings[J].Corrosion Science,2003,45:181-198.
[10]	Shishkanova TV;Sapurina I;Stejskal J;Kral V;Volf R .Ion-selective electrodes: Polyaniline modification and anion recognition[J].Analytica chimica acta,2005(1/2):160-168.
[11]	Ozyilmaz AT;Erbil A;Yazici B .Investigation of corrosion behaviour of stainless steel coated with polyaniline via electrochemical impedance spectroscopy[J].Progress in Organic Coatings: An International Review Journal,2004(1):47-54.

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