用SEM研究了碱性溶液中聚苯胺膜在AZ91镁合金表面的生长过程,并用红外光谱和极化曲线法初步研究了聚苯胺的结构和防腐特点.结果表明,聚苯胺膜首先在某一部位吸附,然后向四周延伸扩展生长,最后膜覆盖镁合金表面并形成类似晶界的交界面.交界线为显微裂缝.在碱性溶液中在镁合金表面制备的聚苯胺膜与在酸性溶液中制备的聚苯胺膜结构不同.聚苯胺膜能够改善AZ91镁合金的耐蚀性.
参考文献
| [1] | Michael M Avedesian;Baker.Magnesium and Magnesium Alloys[C].Library of Congress USA,1999:194. |
| [2] | Yfantis A.;Paloumpa I.;Schmeisser D.;Yfantis D. .Novel corrosion-resistant films for Mg alloys[J].Surface & Coatings Technology,2002(0):400-404. |
| [3] | Truong V T;Lai P K;Moore B T et al.Corrosion protection of magnesium by electroactive polypyrrole/paint coatings[J].Synthetic Metals,2000,110:7. |
| [4] | 穆绍林.苯胺在碱性溶液中的电化学聚合和聚合物的性质[J].电化学,1996(01):54. |
| [5] | Wessling B .Passivation of metals by coating with polyaniline:Corrosion Potential Shift and Morphological Changes[J].Advanced Materials,1994,6:226. |
| [6] | DeBerry 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. |
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