...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Study on failure mechanisms of DLC coated Ti6Al4V and CoCr under cyclic high combined contact stress
【24h】

Study on failure mechanisms of DLC coated Ti6Al4V and CoCr under cyclic high combined contact stress

机译：DLC涂层Ti6Al4V和CoCr在循环高复合接触应力下的失效机理研究。

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

In this study, pin-on-disc (POD) tribotest and cyclic impact-sliding wear tests were used to study contact failure wear mechanisms of DLC coated and uncoated Ti6Al4V and ASTM F-75 CoCr bio-materials. The tests were operated in a laboratory dry environment and in Hank's balanced salt solution (HBSS), which may act as a lubricant against sliding wear or cause corrosion degradation to metal substrates. Uncoated CoCr was superior to Ti6Al4V in the cyclic impact-sliding tests in either dry or wet test conditions, which was believed due to the higher stiffness and strong strain-induced work hardening of CoCr and inferior wear resistance of Ti6Al4V. As a widely used antifriction coating, DLC did not benefit but decreased the durability of the samples in impact-sliding tests under dry condition due to high impact loads which deformed coating surface quickly and invited hard particles to sliding couples. A cushion effect against impact forces by HBSS and a better support provided by stiffer CoCr contributed to an improved base for DLC coatings, compared to the Ti alloy; so the DLC-coated CoCr sample outperformed the DLC-coated Ti6AlV, especially under HBSS condition. (C) 2016 Elsevier B.V. All rights reserved.
机译：在这项研究中，采用圆盘销摩擦试验和循环冲击滑动磨损试验来研究DLC涂层和未涂层​​Ti6Al4V和ASTM F-75 CoCr生物材料的接触失效磨损机理。这些测试是在实验室干燥的环境中以及在汉克的平衡盐溶液（HBSS）中进行的，该盐溶液可作为润滑剂防止滑动磨损或对金属基材造成腐蚀降解。在干式或湿式试验条件下的循环冲击滑动试验中，未涂层的CoCr均优于Ti6Al4V，这被认为是由于CoCr较高的刚度和强的应变诱发加工硬化，以及Ti6Al4V的耐磨性较差。作为一种广泛使用的减摩涂层，DLC在干燥条件下的滑动试验中无益，但降低了样品的耐用性，原因是高的冲击载荷使涂层表面迅速变形并使硬颗粒滑移。与钛合金相比，HBSS对冲击力的缓冲作用以及更硬的CoCr提供的更好支撑有助于改善DLC涂层的基层;因此，DLC涂层CoCr样品的性能优于DLC涂层Ti6AlV，特别是在HBSS条件下。 （C）2016 Elsevier B.V.保留所有权利。

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