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研究了Mg-1.0Ca-0.3Zn合金在银离子剂量为1.5×1017 cm-2注入条件下,在模拟体液(simulated body fluid,SBF)中的耐腐蚀性。通过纳米压痕和三电极体系法对合金的表面硬度和弹性模量、在SBF中的极化曲线测定表明:经过银离子注入后,合金的表面硬度和弹性模量增加,表面硬度在 250 nm 深度达到最大;同时,合金的极化阻力增加,提高了合金的耐腐蚀性能;在1~48 h内 SBF 溶液的pH值逐渐增加,加快了 SBF 溶液的碱化。
The corrosion resistance of Mg-1.0Ca-0.3Zn alloy in a simulated body fluid (SBF) at a dose of 1.5 × 10 17 cm-2 was studied. The surface hardness and elastic modulus of the alloy by nanoindentation and three-electrode system, the polarization curve in the SBF measurement showed that: after the silver ion implantation, the alloy surface hardness and elastic modulus increased, the surface hardness of 250 nm The depth reaches the maximum. At the same time, the polarization resistance of the alloy increases, which improves the corrosion resistance of the alloy. The SBF solution pH gradually increases within 1 ~ 48 h, accelerating the alkalization of the SBF solution.