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在0.3 M草酸与0.1 M苯胺单体组成的水溶液中,用循环伏安法(CV)在316 L不锈钢(SS)表面电化学合成了导电聚苯胺(PANI)薄膜。用傅里叶变换红外光谱(FTIR)对聚苯胺膜进行结构分析,用扫描电子显微镜(SEM)观察表面形貌。结果发现所合成的PANI为具有苯-醌交替的中间氧化态结构,PANI膜呈现细圆颗粒堆积形态。在0.2 M H2SO4中研究了聚苯胺的耐腐蚀性能,结果表明,电化学沉积的聚苯胺膜,其耐腐蚀性能明显高于316L不锈钢,能够对不锈钢基体提供腐蚀保护。
Conductive polyaniline (PANI) thin films were electrochemically synthesized on a 316L stainless steel (SS) surface by cyclic voltammetry (CV) in an aqueous solution of 0.3 M oxalic acid and 0.1 M aniline monomer. The structure of polyaniline film was analyzed by Fourier transform infrared spectroscopy (FTIR), and the surface morphology was observed by scanning electron microscopy (SEM). The results showed that the PANI synthesized with benzene - quinone alternating intermediate oxidation state structure, PANI film showed fine grain accumulation morphology. The corrosion resistance of polyaniline was studied in 0.2 M H2SO4. The results showed that the electrochemical deposition of polyaniline film was significantly higher than that of 316L stainless steel and could provide corrosion protection to the stainless steel substrate.