Abstract Composite coatings of poly(vinyl pyrrolidone) (PVP)-polyaniline (PANI) were prepared on 304 stainless steel (SS) for corrosion protection application by one-step electrodeposition. The composition and structure of the coatings were obtained by Fourier transform infrared spectra (FTIR), Raman spectroscopy, X-ray diffraction (XRD), UV–vis spectrum, scanning electron microscopy (SEM) and atomic force microscopy (AFM). The electropolymerization rate of aniline is decreased and large aggregation of polyaniline particles can be significantly inhibited in the presence of PVP. It is suggested that 1.0 wt% PVP-PANI coating provides enhanced corrosion protection for 304 SS in 1 M H2SO4 solution. The interaction between PANI and PVP favors the formation of the compact structure and consequent high corrosion performance.

中文翻译：

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不锈钢上聚（乙烯基吡咯烷酮）改性聚苯胺涂层的一步电化学合成具有高防腐性能

摘要 采用一步电沉积法在304不锈钢（SS）上制备了聚（乙烯基吡咯烷酮）（PVP）-聚苯胺（PANI）复合涂层，用于防腐​​应用。通过傅里叶变换红外光谱 (FTIR)、拉曼光谱、X 射线衍射 (XRD)、紫外-可见光谱、扫描电子显微镜 (SEM) 和原子力显微镜 (AFM) 获得涂层的组成和结构。在PVP的存在下，苯胺的电聚合速率降低，聚苯胺颗粒的大团聚可以得到显着抑制。建议 1.0 wt% PVP-PANI 涂层为 304 SS 在 1 M H2SO4 溶液中提供增强的腐蚀保护。PANI 和 PVP 之间的相互作用有利于形成紧凑的结构和随之而来的高腐蚀性能。