• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>World Tribology Congress III 2005 vol.2 >CONDUCTIVE ATOMIC FORCE MICROSCOPIC (C-AFM) STUDIES OF Au/MoS_2 NANOCOMPOSITE FILMS
【24h】

CONDUCTIVE ATOMIC FORCE MICROSCOPIC (C-AFM) STUDIES OF Au/MoS_2 NANOCOMPOSITE FILMS

机译：Au / MoS_2纳米复合薄膜的导电原子显微镜（C-AFM）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

Au/MoS_2 nanocomposite films with high Au concentrations (75 to 90 at%), recently developed at The Aerospace Corp., have shown properties that are promising for use in sliding electrical contacts, such as slip rings and relays. For such applications, it is critical to maintain low contact resistance while maintaining low friction with controlled wear (i.e. removal and transfer of material). In this report, we present results from conductive atomic force microscopic (c-AFM) investigations of Au/MoS_2 nanocomposite structures and their dynamic material transfer phenomena under a sliding contact, which are both important in understanding the friction, wear and conducting mechanisms of the films. We have performed c-AFM to obtain topography, friction and current images simultaneously. Remarkable morphological changes were observed in a series of current images which initially showed distinct nanoscale metallic (Au) and semiconducting (MoS_2) phases that were relatively well dispersed, but repeated contact sliding in the same area resulted in gradual disappearance of the metallic phase and reduction of the overall friction. These results reveal that MoS_2 is transferred across the surface to provide lubrication while Au particles at or near the surface provide electrical conductivity. The c-AFM results provide real-time and real-space visualization of the lubrication mechanism occurring inside a nanoscale sliding contact.
机译：The Aerospace Corp.最近开发的具有高Au浓度（75至90 at％）的Au / MoS_2纳米复合薄膜，显示出有望用于滑动电触点（如滑环和继电器）的特性。对于此类应用，至关重要的是保持低接触电阻，同时保持低摩擦并控制磨损（即材料的去除和转移）。在本报告中，我们介绍了导电原子力显微镜（c-AFM）对Au / MoS_2纳米复合结构及其在滑动接触下的动态材料转移现象的研究结果，这对于理解碳纳米管的摩擦，磨损和导电机理都非常重要。电影。我们已经执行了c-AFM来同时获取形貌，摩擦和当前图像。在一系列当前图像中观察到显着的形态学变化，这些图像最初显示出相对分散良好的独特的纳米级金属（Au）和半导体（MoS_2）相，但在同一区域中反复接触滑动导致金属相逐渐消失并还原整体摩擦。这些结果表明，MoS_2在整个表面上转移以提供润滑作用，而在表面处或附近的Au颗粒则提供导电性。 c-AFM结果提供了在纳米级滑动触点内部发生的润滑机理的实时和真实空间可视化。

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