Effect of acidic fluoride solution on the corrosion resistance of ZrTi alloys for dental implant application
Effect of acidic fluoride solution on the corrosion resistance of ZrTi alloys for dental implant application
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DOI：
10.1016/j.corsci.2014.06.042
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发表时间：
2014-10-01
影响因子：
8.3
通讯作者：
Souto, R. M.
中科院分区：
文献类型：
--
作者：
Mareci, D.;Bolat, G.;Souto, R. M.
在含有NaF浓度为0.2、0.5和1wt.%的酸性人工唾液（pH = 3）中监测了表面改性和未表面改性的Zr5Ti、Zr25Ti和Zr45Ti的电化学行为，模拟牙齿冲洗液中的氟化物浓度。电化学阻抗谱（EIS）和X射线光电子能谱（XPS）数据表明，ZrTi合金热氧化后的氧化膜中含有TiO_2和ZrO_2，但外层的Ti含量大于基体合金中的Ti含量。在500摄氏度的空气中使用热氧化处理的ZrTi合金对酸性氟化环境具有高耐腐蚀性。(C)2014爱思唯尔有限公司版权所有。
The electrochemical behaviour of Zr5Ti, Zr25Ti, and Zr45Ti, with and without surface modification were monitored in acidic artificial saliva (pH = 3) containing NaF concentrations 0.2, 0.5, and 1 wt.%, simulating the fluoride concentrations in dental rinses. A passive behaviour for thermally oxidized ZrTi alloys was found using EIS, and XPS data show that the protective oxide film contains both TiO2 and ZrO2, though titanium contents in the outer layer bigger than those in the base alloy result from thermal oxidation. High corrosion resistance to acidic fluoridated environments of ZrTi alloys treated using thermal oxidation in air at 500 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.