As two-dimensional (2D) materials, graphene and hexagonal-boron nitride ( h -BN) are famous for protective coatings, because of their excellent chemical resistance, barrier property, impermeability along with thermal stability, and a large number of these properties are particularly suitable for protective coatings. However, the applications of graphene for metal protection have been limited by galvanic corrosion issues. Also, h -BN nanosheets are also explored as potential materials for corrosion protecting, especially, electrical insulation of h -BN is influential in solving electrochemical reaction and uniquely suitable to be used as an anticorrosion material. Interestingly, graphene doped h -BN exhibit outstanding functionalities in a synergic manner compare to stand-alone 2D materials. This review provides the fundamental summary of preparation methods for graphene and h -BN, meanwhile, the key challenges and future potential of protective coatings are discussed and predicted.

中文翻译：

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二维石墨烯和h-BN层在防护涂料中的应用

作为二维（2D）材料，石墨烯和六方氮化硼（h -BN）因其优异的耐化学性，阻隔性，不渗透性以及热稳定性而闻名于世，因此它们在保护性涂层中广为人知。特别适用于防护涂料。但是，石墨烯在金属保护中的应用受到电偶腐蚀问题的限制。另外，还研究了h -BN纳米片作为潜在的腐蚀防护材料，特别是h -BN的电绝缘对解决电化学反应有影响，并且特别适合用作防腐材料。有趣的是，与独立的2D材料相比，掺杂石墨烯的h-BN以协同方式表现出出色的功能。