电聚合表面改性对电容器用高纯铝箔侵蚀行为的影响

发布时间：2018-02-11 02:17

本文关键词： 铝箔电聚合聚苯胺薄膜聚吡咯薄膜电化学腐蚀　出处：《轻合金加工技术》2017年11期 　论文类型：期刊论文

【摘要】：在铝箔表面电聚合制备导电聚合物薄膜,进行表面改性,并在硫酸-盐酸-硝酸钠电解质体系中采用直流方式进行电蚀,研究电聚合表面改性对铝箔电蚀的行为的缓蚀效果及缓蚀机制。研究结果表明:聚合物薄膜通过傅里叶红外检测为酸掺杂态。导电聚合物薄膜覆盖在铝箔表面使其维持高电位,腐蚀介质透过聚合物膜层,使铝发生溶解,在膜层处生成气相,导电聚合物膜层起到阴极作用,促进了铝箔腐蚀形成孔径大小相似的隧道孔,提高了发孔密度和隧道孔长度,气相破坏膜层且阴极薄膜发生氧化还原反应,对铝箔表面过蚀行为起到缓蚀作用。对比聚苯胺薄膜和聚吡咯薄膜对铝箔直流电蚀行为影响,通过扫面电镜图(SEM)和金相断面(OM)分析,表明聚苯胺薄膜的缓蚀效果更为明显,有效提高了表面发孔密度,改善了铝箔表面的过蚀现象,改善了隧道的孔形貌。
[Abstract]:In an aluminum foil surface polymerization preparation of conductive polymer film, surface modification, and electrical erosion by DC in sulfuric acid hydrochloric acid - sodium nitrate electrolyte system, study the inhibition effect of electro polymerization behavior on aluminum foil electrical erosion surface modification and inhibition mechanism. The results show that: polymer films by Fourier transform infrared detection of acid doped state. The conductive polymer film covered on the surface of aluminum foil to maintain its high potential, corrosion medium through the polymer film, the aluminum dissolution occurs in the film formed at the gas phase, conducting polymer film to promote the role of the cathode, the formation of aluminum foil corrosion pore size similar to the tunnel hole, increases the hole density and tunnel hole length, gas phase failure and film cathode film redox reaction on the surface of aluminum foil erosion behavior to inhibition. Comparison of polyaniline film and polypyrrole film on aluminum foil dc The influence of corrosion behavior is analyzed by scanning electron microscopy (SEM) and metallographic section (OM). The results show that the corrosion inhibition effect of polyaniline film is more obvious, which effectively improves the surface pore density, improves the surface corrosion of aluminum foil and improves the pore morphology of tunnel.

【作者单位】：贵州大学化学与化工学院;江苏中联科技集团;
【基金】：贵州省科技合作计划(黔科合LH字[2016]7438号) 贵州省教育厅自然科学研究项目(黔教合KY字(2015426)号)支持
【分类号】：TG174.4;TM53

【相似文献】