Abstract Graphene oxide (GO) was incorporated into a plasma electrolytic oxidation (PEO)-based coating to further promote the tribological properties and corrosion resistance of AZ31 Mg alloys. The results demonstrated that the embedded GO additives reduced the surface roughness and porosity, promoted the formation of blocked pores and minor-sized structures, and enhanced the microhardness of the GO-containing coatings. The composite coating prepared with 20 mL L−1 GO additive was sufficient for sustaining a low and stable friction coefficient and high wear endurance. In addition, the inclusion of a GO additive in the composite coating could effectively decrease the corrosion rate and enhance the polarization resistance.

中文翻译：

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1氧化石墨烯添加剂对AZ31镁合金PEO涂层摩擦学和电化学腐蚀性能的影响

摘要 氧化石墨烯 (GO) 被掺入等离子体电解氧化 (PEO) 基涂层中，以进一步提高 AZ31 镁合金的摩擦学性能和耐腐蚀性能。结果表明，嵌入的 GO 添加剂降低了表面粗糙度和孔隙率，促进了堵塞孔隙和小尺寸结构的形成，并提高了含 GO 涂层的显微硬度。用 20 mL L-1 GO 添加剂制备的复合涂层足以维持低且稳定的摩擦系数和高耐磨性。此外，在复合涂层中加入GO添加剂可以有效降低腐蚀速率并提高抗极化能力。