...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Components, Hybrids, and Manufacturing Technology >Contact resistance variations of tungsten contacts operated in air and silver-tungsten carbide contacts operated in vacuum
【24h】

Contact resistance variations of tungsten contacts operated in air and silver-tungsten carbide contacts operated in vacuum

机译：空气中操作的钨触点和真空中的碳化银钨触点的接触电阻变化

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Previous research on W-Ag contacts has shown the moderating effect that silver has on the formation of high-resistance contact spots. The effects of the two other components in the formation of the complex oxides are explored: the role of tungsten and oxygen (with no silver) and the role of silver and tungsten in the absence of oxygen. Two experiments were conducted in order to determine the effects of tungsten and oxide formation on the variations of contact resistance (R/sub c/) of Ag-W contacts. The first consisted of switching pure tungsten contacts in air in a 20-A circuit for 500 operations and then observing the variations of R/sub c/ while they passed a 20-A steady-state current. In the second experiment Ag-WC contacts were operated in vacuum and then subjected to a series of steady-state currents up to 5000 A. The pure tungsten contacts exhibited a wide variation in R/sub c/. The Ag-WC contacts showed a consistent steady R/sub c/ value. These results are discussed with reference to previous data on Ag-W and Ag-WC contacts operated in air and the formation and dissociation of tungsten oxides and silver tungstates.
机译：先前对W-Ag接触的研究表明，银对高电阻接触点的形成具有调节作用。探索了另外两种组分在复合氧化物形成中的作用：钨和氧（无银）的作用以及银和钨在无氧条件下的作用。为了确定钨和氧化物的形成对Ag-W触点的接触电阻（R / sub c /）变化的影响，进行了两个实验。首先是在20-A电路中切换纯钨触点在空气中进行500次操作，然后观察R / sub c /在通过20-A稳态电流时的变化。在第二个实验中，Ag-WC触点在真空中运行，然后经受一系列高达5000 A的稳态电流。纯钨触点的R / sub c /表现出很大的变化。 Ag-WC触点显示出稳定的稳定R / sub c /值。参考先前在空气中操作的Ag-W和Ag-WC接触以及氧化钨和钨酸钨的形成和离解的先前数据讨论了这些结果。

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