Effect of Zn2+ doping on corrosion resistance of polyaniline film prepared by electrochemical synthesis
-
摘要: 为提高聚苯胺（PANI）膜的耐蚀性，在苯胺-硫酸电解液体系中，采用电化学恒电流法在不锈钢表面合成了PANI膜，利用电化学测试技术、SEM和XRD研究了Zn2+掺杂对电化学合成PANI膜耐蚀性能的影响。结果表明：Zn2+的掺杂使PANI膜微观形貌由不规则片状转变为规则的纤维状形貌；掺杂改性后PANI膜的交流阻抗明显增大，腐蚀电位向正方向移动，腐蚀电流减小；掺杂Zn2+的PANI膜经质量分数为10% 的HCl点滴实验测试，腐蚀时间达320 s；经中性盐雾实验48 h后，PANI膜未见锈蚀。Abstract: In order to improve corrosion resistance of polyaniline (PANI) film, in the system of aniline-sulfuric acid electrolytic fluid, the electrochemical constant current method was adopted to prepare PANI film on surface of stainless steel. The effect of Zn2+ doping on corrosion resistance of PANI film prepared by electrochemical synthesis was studied using electrochemical measurement technology, SEM and XRD. Results show that Zn2+ doping can change the microstructure morphology of PANI film from irregular flake into fibrous. The alternating-current impedance of PANI film increases markedly after doping modification, the corrosion potential moves towards the positive direction, and the corrosion current decreases. The 10wt% HCl drop corrosion time of the PANI film with doped Zn2+ is 320 s, and no rust appears after neutral salt mist experiment for 48 h.
-
-
计量
- 文章访问数: 725
- HTML全文浏览量: 61
- PDF下载量: 412
下载:
