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研究了钽(Ta)离子注入对GZ51K生物镁合金力学性能和耐蚀性的影响,通过扫描电镜、纳米压痕、摩擦磨损试验和电化学试验对镁合金形貌及性能进行了分析。结果表明:适当剂量的Ta离子注入能有效改善GZ51K镁合金表面的力学性能和耐蚀性能。随注入剂量的增加,其硬度不断升高,而摩擦系数和腐蚀电流密度先下降后上升。当注入剂量为2×1016ions/cm2时,其摩擦系数与腐蚀电流密度降到最低,与基体相比,分别下降了约60%与90%。
The effects of tantalum (Ta) ion implantation on mechanical properties and corrosion resistance of GZ51K biomagnesium alloy were studied. The morphology and properties of magnesium alloy were analyzed by scanning electron microscopy, nanoindentation, tribological test and electrochemical test. The results show that Ta ion implantation can effectively improve the mechanical properties and corrosion resistance of GZ51K magnesium alloy. With the increase of injected dose, the hardness increased continuously, while the friction coefficient and corrosion current density first decreased and then increased. When the implantation dose is 2 × 1016ions / cm2, the friction coefficient and corrosion current density decrease to the lowest, compared with the matrix, respectively, decreased by about 60% and 90%.