Study on anodic oxidation modification and properties of 3D printed porous medical titanium alloy
Objective To investigate the influence of anodic oxidation on the release of Al/V metal ions in 3D printed porous Ti-6Al-4V alloy.Methods The surface of 3D printed porous Ti-6Al-4V alloy was modified by anodic oxidation,and the microstructural organization,surface morphology,and ion release characteristics of the porous Ti-6Al-4V alloy before and after anodic oxidation were studied.Results Anodic oxidation surface modification did not change the α+β phase composition of the porous Ti-6Al-4V alloy,and its surface morphology was not changed.The O element content in the alloy surface increased by 6.48%,and no non-matrix elements were introduced.Anodic oxidation significantly reduced the release of Al/V metal ions in 3D printed porous Ti-6Al-4V alloy.The results of Hank's solution immersion for 5 weeks showed that after anodic oxidation,the solubility of Al ions was reduced by 93.4%,and the concentration of V ions was reduced by 89.5%.Conclusion Anodic oxidation,which reduces the release of Al/V ions and reduces the risk of potential toxicity,is a beneficial approach to further improve the safety of 3D printed porous Ti-6Al-4V titanium alloy implant devices.
3D printingTi-6Al-4VAnodic oxidationIon precipitation
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维普
