• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Electrochemical Corrosion and In Vitro Bioactivity of SiO2:ZrO2-Coated 316L Stainless Steel in Simulated Body Fluid
【24h】

Electrochemical Corrosion and In Vitro Bioactivity of SiO2:ZrO2-Coated 316L Stainless Steel in Simulated Body Fluid

机译：SiO2：ZrO2涂层的316L不锈钢在模拟体液中的电化学腐蚀和体外生物活性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of Si:Zr ratio on the in vitro bioactivity and electrochemical corrosion behavior of SiO2:ZrO2-mixed oxide-coated 316L stainless steel (SS) was evaluated in simulated body fluid (SBF) solution for 72, 120, and 168 h. Growth of Hydroxyapatite (HAp) was accelerated when Si content in the coating was increased. The Zr content in the coating improved the corrosion resistance of 316L SS rather than accelerating the HAp growth. When the Si:Zr ratio was 50:50, the coating exhibited significant improvement in corrosion resistance as well as HAp growth. The mechanism of HAp growth was proposed based on the change in surface zeta potential values of the coatings. Potentiodynamic polarization studies revealed about 10 and 5 times reduction in corrosion current density (i (corr)) values for SiO2:ZrO2 (50:50)-coated 316L SS after 168 h of immersion compared to SiO2, ZrO2, and Si:Zr (70:30) coatings in SBF solutions thus confirming the superior corrosion resistance. The equivalent circuit parameters derived from electrochemical impedance spectroscopy studies further confirmed significant improvement in charge transfer resistance value even after 168 h of exposure.
机译：在模拟体液（SBF）溶液中分别评估72小时，120小时和168小时，Si：Zr比对SiO2：ZrO2混合氧化物包覆的316L不锈钢（SS）的体外生物活性和电化学腐蚀行为的影响。当涂层中Si含量增加时，羟基磷灰石（HAp）的生长加快。涂层中的Zr含量提高了316L SS的耐腐蚀性，而不是促进了HAp的生长。当Si∶Zr比为50∶50时，涂层在耐腐蚀性和HAp生长方面显示出显着的改善。基于涂层表面ζ电势值的变化，提出了HAp生长的机理。电位动力学极化研究表明，与SiO2，ZrO2和Si：Zr（相比），在SiO2：ZrO2（50:50）涂层的316L SS浸泡168小时后，其腐蚀电流密度（i（corr））值降低了约10到5倍（ 70:30）在SBF溶液中的涂层，从而证实了优异的耐腐蚀性。从电化学阻抗谱研究得出的等效电路参数进一步证实，即使在暴露168小时后，电荷转移电阻值也得到了显着改善。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号