Characterization of the surface layers formed on titanium by plasma electrolytic oxidation
Characterization of the surface layers formed on titanium by plasma electrolytic oxidation
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DOI：
10.1016/j.surfcoat.2010.05.015
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发表时间：
2010-12-15
影响因子：
5.4
通讯作者：
Sobczak, Janusz W.
中科院分区：
文献类型：
--
作者：
Krupa, Danuta;Baszkiewicz, Jacek;Sobczak, Janusz W.
本文涉及在含有 Ca P Si 和 Na 的溶液中通过 PEO 方法（等离子体电解氧化）对钛进行表面改性。通过 XPS 和 EDS 检查由此形成的表面层的化学成分，通过 SEM 观察表面形貌，通过 X 射线衍射 (XRD) 确定相组成，通过划痕试验评估氧化层的附着强度。通过电化学方法在不同暴露时间的温度 37 C 的模拟体液 (SBF) 中测定耐腐蚀性。得到的氧化层是多孔的，富含 Ca P Si 和 Na，其性能取决于电解质溶液和氧化过程的参数 电化学测试结果表明，PEO 表面改性不会恶化钛在 SBF 中暴露 13 h 后的耐腐蚀性能 电化学阻抗谱 (EIS) 结果表明，表面层具有复杂的结构，并且在长期暴露于 SBF 中其电性能发生变化 (C) 2010 Elsevier B V 版权所有
This paper is concerned with the surface modification of titanium by the PEO method (plasma electrolytic oxidation) in the solutions which contain Ca P Si and Na The chemical composition of the thus formed surface layers was examined by XPS and EDS The morphology of the surface was observed by SEM The phase composition was determined by X-ray diffraction (XRD) The adhesive strength of the oxide layers was evaluated by the scratch-test The corrosion resistance was determined in a simulated body fluid (SBF) at a temperature of 37 C by electrochemical methods for various exposure times The oxide layers obtained were porous and enriched with Ca P Si and Na and their properties depended on the electrolyte solution and the parameters of the oxidation process The results of the electrochemical examinations show that the surface modification by PEO does not worsen the corrosion resistance of titanium after a 13 h exposure in SBF The electrochemical impedance spectroscopy (EIS) results indicate that the surface layers have a complex structure and that their electric properties undergo changes during long term exposures in SBF (C) 2010 Elsevier B V All rights reserved