The corrosion of Mg alloys is a significant concern in practical applications, and silane-based protective organic coatings are promising to protect the Mg alloys from corrosion. The (3-glycidyloxypropyl) trimethoxysilane/graphene oxide (GPTMS/GO) coating was developed using electroless codeposition technique on AZ91 Mg alloy such that GO sheets were grafted with silanol groups. The coating was prepared by dipping AZ91 Mg alloy in GPTMS/GO solution and then curing at 120 °C. The electrochemical measurement results showed an increased corrosion resistance of AZ91 Mg alloy in 3.5% NaCl solution. The decrease in the corrosion current density value of 0.016 µA cm⁻² is attributed to the formation of a passive layer of GO grafted GPTMS on the surface of AZ91 Mg alloy. The enhanced hydrophobicity of 108°, the improved adhesion (5 A) and high hardness (52 HV) were attained due to covalent metallic siloxane bonds (MgOSi) and the laminate structure of GO developed on AZ91 substrate.

镁合金的腐蚀是实际应用中的一个重要问题，硅烷基有机保护涂层有望保护镁合金免受腐蚀。（3-缩水甘油氧基丙基）三甲氧基硅烷/氧化石墨烯（GPTMS/GO）涂层是使用无电共沉积技术在 AZ91 镁合金上开发的，从而使 GO 片材接枝有硅烷醇基团。该涂层是通过将 AZ91 镁合金浸入 GPTMS/GO 溶液中，然后在 120°C 下固化来制备的。电化学测量结果表明 AZ91 镁合金在 3.5% NaCl 溶液中的耐腐蚀性能提高。腐蚀电流密度值降低 0.016 µA cm ^-2归因于在 AZ91 镁合金表面形成了一层 GO 接枝 GPTMS 钝化层。由于共价金属硅氧烷键 (MgOSi) 和在 AZ91 基板上开发的 GO 层状结构，实现了 108° 的增强疏水性、改进的附着力 (5 A) 和高硬度 (52 HV)。