目前,国内鲜见导电涂层在红壤中腐蚀行为的研究报道.在高黏度的丙烯酸树脂涂料中加入溶剂、分散剂、消泡剂、增稠剂、镍粉等,制备了防腐蚀导电涂料,并在Q235钢表面制备导电涂层.通过表面接触电阻分析镍粉含量与涂层导电性的关系.将不同镍粉含量的涂层浸泡在红壤溶液中,采用电化学阻抗谱、Tafel极化曲线和光学显微镜等方法,研究了镍粉含量对导电涂层耐腐蚀性能的影响.向红壤中加入不同浓度Fe2(SO4)3,研究了Fe2(SO4)3含量对导电涂层耐蚀性能的影响.结果表明:镍粉含量越高,涂层的导电性越好,耐腐蚀性越差;红壤溶液中,Fe2(SO4)3的含量越高,涂层的阻抗越小,耐腐蚀性越差,Fe2(SO4)3会加速腐蚀反应的进行.
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