石墨烯在金属表面防腐中的应用

Applications of graphene in anti-corrosion of metal surface

石墨烯作为一种新型材料,因其出色的化学惰性和抗渗透性逐渐成为了防腐领域的研究热点.本文结合最新的研究成果,对包括石墨烯薄膜及石墨烯粉体在防腐领域的应用进行更加全面的讨论.从石墨烯防腐作用机理(主要包括阻隔、屏蔽、缓蚀、加固、阴极保护和自修复)和其相应的涂层制备方法 (化学气相沉积法制备的石墨烯薄膜及石墨烯粉体制备的复合涂料)开始,进而探讨不同影响因素(缺陷、导电性、氧化程度、片层大小及含量等)对石墨烯防腐效果的影响,最后对各种方法进行综合比较,并对未来的发展进行展望.本文通过对已有工作的回顾,为今后制备防腐性能更加优良的石墨烯材料提供重要的参考.

As an emerging material,graphene has become a research hotspot in the field of anti-corrosion because of its excellent chemical inertia and permeability resistance.In this paper,combined with the latest research results,the applications of graphene film and graphene powders in the field of anti-corrosion are discussed more comprehensively.First,the anti-corrosion mechanisms of graphene(mainly including barrier effect,shielding effect,corrosion inhibition synergy,enhancement of coating adhesion,cathodic protection,and self-healing effect)and its corresponding coating preparation methods(graphene film prepared by chemical vapor deposition method and composite coatings prepared with graphene powders)are introduced.Then,the influences of different factors such as defects,conductivity,oxidation degree,flake size,and content of graphene on the anticorrosion performance are discussed.Finally,various methods are comprehensively compared with each other,and future development is prospected.This paper not only reviews the existing work,but also has a certain reference value for preparing graphene materials with better corrosion resistance in the future.