Ti-48Al-2Cr-2Nb（原子百分比）在林格氏液中的腐蚀评估。
Corrosion evaluation of Ti-48Al-2Cr-2Nb (at.%) in Ringer's solution.
作者信息
Delgado-Alvarado C, Sundaram P A
机构信息
Department of Mechanical Engineering, University of Puerto Rico, P.O. Box 9045, Mayagüez, PR 00680, USA.
出版信息
Acta Biomater. 2006 Nov;2(6):701-8. doi: 10.1016/j.actbio.2006.05.012. Epub 2006 Aug 2.
The corrosion behavior of Ti-48Al-2Cr-2Nb (at.%) in Ringer's solution was studied to evaluate its potential as a biocompatible material. Corrosion properties of Ti-6Al-4V were determined under the same conditions for comparison. Two electrochemical techniques, potentiodynamic anodic polarization and electrochemical impedance spectroscopy, were employed to test Ti-48Al-2Cr-2Nb and Ti-6Al-4V. Surface modifications to the samples were made by autoclaving and by oxidation in air at 500 degrees C and 800 degrees C. The results show excellent corrosion resistance for unmodified Ti-48Al-2Cr-2Nb, corroborated by the high values of polarization resistance and corrosion potential and low values of corrosion current and corrosion rate. Ti-48Al-2Cr-2Nb appears to possess corrosion characteristics similar to Ti-6Al-4V. Surface modification rendered the Ti-48Al-2Cr-2Nb material extremely corrosion resistant.
研究了Ti-48Al-2Cr-2Nb（原子百分比）在林格氏溶液中的腐蚀行为，以评估其作为生物相容性材料的潜力。在相同条件下测定了Ti-6Al-4V的腐蚀性能以作比较。采用动电位阳极极化和电化学阻抗谱这两种电化学技术对Ti-48Al-2Cr-2Nb和Ti-6Al-4V进行测试。通过高压灭菌以及在500℃和800℃空气中氧化对样品进行表面改性。结果表明，未改性的Ti-48Al-2Cr-2Nb具有优异的耐腐蚀性，极化电阻和腐蚀电位的高值以及腐蚀电流和腐蚀速率的低值证实了这一点。Ti-48Al-2Cr-2Nb似乎具有与Ti-6Al-4V相似的腐蚀特性。表面改性使Ti-48Al-2Cr-2Nb材料具有极高的耐腐蚀性。
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