Xu Xiuting,Ji Lianzhong,Chen Shuwen,et al.Effect of polyaniline-TiO 2 composite film on corrosion resistance of 316L stainless steel[J].Plating & Finishing,2023,(1):28-32.[doi:10.3969/j.issn.1001-3849.2023.01.005]
聚苯胺-TiO2复合膜对316L不锈钢耐蚀性能的影响
- Title:
- Effect of polyaniline-TiO 2 composite film on corrosion resistance of 316L stainless steel
- Keywords:
- polyaniline ; titanium dioxide ; 316L stainless steel ; corrsion resistance
- 分类号:
- TG174
- 文献标志码:
- A
- 摘要:
- 以苯胺单体和纳米 TiO 2 胶体溶液为电解液，采用电化学聚合法在 316L 不锈钢表面合成了聚苯胺（ PANI ）膜和 PANI-TiO 2 复合膜，并利用扫描电镜、 X 射线衍射等检测手段对 PANI-TiO 2 复合膜的 316L 不锈钢表面进行了表征，用循环伏安法和动电位极化曲线研究不同 pH 值下苯胺聚合的效果及不同 TiO 2 含量对 316L 不锈钢耐蚀性能的影响。结果表明，在 pH 为 2.5 的条件下，聚苯胺的聚合效果最好；相比于单一聚苯胺膜， PANI-TiO 2 复合膜对 316L 不锈钢具有更好的保护性能。当 TiO 2 添加量为 1.5 g 时，制备的复合膜对提高 316L 不锈钢的耐蚀性效果最佳，其腐蚀电位为 - 0.55 V 。
- Abstract:
- ： Polyaniline （ PANI ） film and polyaniline-TiO 2 composite film were synthesized on 316L stainless steel by electrochemical polymerization using aniline monomer and nano TiO 2 colloidal solution as electrolyte. The surface of 316L stainless steel with polyaniline-TiO 2 composite film was characterized by means of scanning electron microscope （ SEM ） and X-ray diffraction （ XRD ） . The effect of aniline polymerization at different pH and the effect of TiO 2 content on the corrosion resistance of 316L stainless steel were studied by cyclic voltammetry and potentiodynamic polarization curves. The results show that the polymerization effect of polyaniline is the best at pH 2.5. Compared with single polyaniline film ， PANI-TiO 2 composite film has better protection performance for 316L stainless steel. When the content of TiO 2 was 1.5 g ， the composite film has the best effect on improving the corrosion resistance of 316L stainless steel ， and its corrosion potential was - 0.55 V.
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备注/Memo
收稿日期： 2021-01-16 修回日期： 2021-03-31 作者简介： 许秀婷（ 1999 ―），女，本科， email ： 1512077163@qq.com * 通信作者： 滕莹雪， email ： tenyingxue@21cn.com 基金项目： 国家自然科学基金面上项目（ 52074149 ）；辽宁省教育厅项目（ 2020LNZD07 ， LJKZ0287 ）