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Ag離子注入Ti6Al4V合金抗Hank’s溶液腐蝕性能研究
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Corrosion Resistance of Ti6Al4V Alloy Modified by Ag Ion Implantation in Hank’s Solution
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    摘要:

    采用注入不同劑量5×1016, 1×1017, 5×1017和9×1017ions/cm2，加速電壓30 kV對(duì)Ti6Al4V合金進(jìn)行Ag離子注入表面改性。使用動(dòng)電位極化曲線研究Ag離子注入前后Ti6Al4V合金抗Hank’s溶液腐蝕性能，利用小角掠射X射線衍射技術(shù)研究Ag離子注入前后Ti6Al4V合金表面物相組成，用X射線光電子能譜技術(shù)分析離子注入合金表面和腐蝕樣品表面元素存在的化合態(tài)。結(jié)果表明，Ag離子注入提高了合金抗Hank’s溶液腐蝕性能，腐蝕電流密度隨Ag離子注入劑量的增加稍有變化。離子注入Ti6Al4V合金表面的氧化物腐蝕阻擋層、離子注入表面合金層和表面生成的Ag和TiAg有利于合金抗Hank’s溶液腐蝕性能的改善

    Abstract:

    Ti6Al4V alloy samples were modified by implanting silver ion at the dose of 5×1016, 1×1017, 5×1017 and 9×1017 ions/cm2 under an acceleration voltage of 30 kV. The potentiodynamic polarization curve was used to investigate the corrosion resistance of un-implanted and Ag+-ion-implanted Ti6Al4V alloy in Hank’s solution. The glancing angle X-ray diffraction and X-ray photoelectron spectroscopy were used to investigate the phase composition and chemical states of elements on Ti6Al4V alloy surface. The results show that silver ion implantation can improve the corrosion resistance of Ti6Al4V alloy in Hank’s solution. The corrosion current density of Ag+-ion-implanted Ti6Al4V alloy changed slightly with the Ag ion dose increasing. The corrosion resistance improvement of Ag+-ion-implanted Ti6Al4V alloy samples in Hank’s solution is attributed to all kinds of corrosion-resistant oxide layer, surface alloy layer produced during ion implantation and Ag and TiAg existing in the outermost surface of the Ag+-ion-implanted Ti6Al4V alloy

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冷崇燕,周 榮,張 旭. Ag離子注入Ti6Al4V合金抗Hank’s溶液腐蝕性能研究[J].稀有金屬材料與工程,2010,39(8):1354~1359.[Leng Chongyan, Zhou Rong, Zhang Xu. Corrosion Resistance of Ti6Al4V Alloy Modified by Ag Ion Implantation in Hank’s Solution[J]. Rare Metal Materials and Engineering,2010,39(8):1354~1359.]
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  • 收稿日期:2009-08-30
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