摘要： 通过自腐蚀电位监测和电化学阻抗谱方法研究了石墨烯对 ７０％Ｚｎ 环氧富锌涂层的影响。 石墨烯的存在使富锌涂层在阴极保护产生之前出现了一段时间的屏蔽保护，推迟了锌电化学腐蚀的时间，有利于涂层整体使用寿命的延长。 石墨烯的存在有利于涂层中锌与锌以及锌与铁之间的导电接触，促进了锌对铁的阴极保护作用。 对于 ７０％Ｚｎ 涂层，石墨烯最佳质量分数为 ０.３％左右。 文章也提出了石墨烯富锌涂层的自腐蚀电位 Ｙ－Ｄ 模型。

关键词: 石墨烯, 环氧, 富锌涂层, 重防腐, 电化学

Abstract: The effect of graphene on zinc-rich coatings comprising Zn 70% has been stud-ied by self-corrosion potential monitoring and electrochemical impedance spectroscopy (EIS).The results show that the presence of graphene has provided a certain degree of shielding pro-tection before the cathodic protection occurs, which delays the electrochemical corrosion of zinc and is conducive to extend the service life of the coating. (n addition, the presence of gra-phene facilitates the conductive contact between zinc and zinc and/or between zinc and iron in the coating, which promotes the cathodic protection of zinc to iron For 70% zinc-rich coating comprising Zn 70%, the optimum mass ratio of graphene is about 0.3%. In this paper,the corrosion potential Y-D model of graphene zinc-rich coating is also proposed.

Key words: graphene, epoxy, zinc-rich coating, heavy-duty anticorrosion, electrochemistry