Abstract In this research, cold sprayed Al coating layer on AZ31B Mg alloy was coated with cold sprayed Ti and Ta/Ti coatings, which noticeably reduced the wear rate of Al coated Mg alloy. Electrochemical corrosion tests and infinite focus 3D measurement results revealed that the high surface activity of commercially pure-Al coating, diffusion-controlled reactions, and formation of corrosion pits could be mitigated using Ti top coating. However, a dense layer of Ta on Ti coating exceptionally improved the corrosion resistance of Ti/Al coated AZ31B Mg alloy in neutral 3.5 wt.% NaCl solution This work gives a new strategy to considerably raise the wear and corrosion resistances of cold spray Al coated Mg alloys by double layered Ta/Ti coatings.

中文翻译：

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3.5 wt%NaCl溶液中冷喷双层Ta/Ti涂层对冷喷Al涂层AZ31B镁合金表面硬度、耐磨性和耐蚀性的改性

摘要 本研究在AZ31B镁合金的冷喷涂Al涂层上涂覆冷喷涂Ti和Ta/Ti涂层，显着降低了Al涂层镁合金的磨损率。电化学腐蚀测试和无限聚焦 3D 测量结果表明，使用 Ti 顶涂层可以减轻商用纯铝涂层的高表面活性、扩散控制反应和腐蚀坑的形成。然而，Ti 涂层上的致密 Ta 层显着提高了 Ti/Al 涂层 AZ31B 镁合金在 3.5 wt.% NaCl 中性溶液中的耐腐蚀性 这项工作提供了一种新策略，可显着提高冷喷涂 Al 涂层的耐磨性和耐腐蚀性由双层 Ta/Ti 涂层制成的镁合金。