...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Chemistry and Physics >A comparative study on the tribological behavior of nanocrystalline nickel and cobalt coatings correlated with grain size and phase structure
【24h】

A comparative study on the tribological behavior of nanocrystalline nickel and cobalt coatings correlated with grain size and phase structure

机译：与晶粒尺寸和相结构相关的纳米晶镍和钴涂层的摩擦学性能比较研究

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

Nanocrystalline (nc) nickel and cobalt coatings with different grains size were produced by the control of current density during pulse electrodeposition process. Effects of grain size reduction on the tribological properties of nanocrystalline Ni and Co coatings associated with phase structure were investigated comparatively. An important and interesting result is that the wear volume loss of all the Co coatings are more than one order of magnitude lower and the friction coefficient are nearly two times smaller than that of Ni coatings with almost the same grain size under the same wear conditions. For the nanocrystalline Ni coatings with face-centered cubic (fcc) structure, hardness related to grain size plays a dominating role in the tribological behavior, whereas in the case of nanocrystalline Co coatings with hexagonal close-packed (hcp) structure, the tribological behavior was slightly influenced by the hardness. The difference in friction and wear behavior between Ni and Co coatings as a function of grain size or hardness can be attributed to their different phase structure and the corresponding wear mechanism. (c) 2005 Elsevier B.V. All rights reserved.
机译：通过控制脉冲电沉积过程中的电流密度，可以生产出具有不同晶粒尺寸的纳米晶（nc）镍和钴涂层。比较研究了晶粒尺寸减小对与相结构有关的纳米晶Ni和Co涂层的摩擦学性能的影响。一个重要而有趣的结果是，在相同的磨损条件下，所有Co涂层的磨损量损失均比一个几乎相同的晶粒大小的Ni涂层的磨损量损失低一个数量级以上，摩擦系数几乎小两倍。对于具有面心立方（fcc）结构的纳米晶Ni涂层，与晶粒尺寸相关的硬度在摩擦学行为中起主要作用，而对于具有六方密堆积（hcp）结构的纳米晶Co涂层，摩擦学行为受到硬度的轻微影响。 Ni和Co涂层之间的摩擦和磨损行为随晶粒尺寸或硬度变化的差异可归因于其不同的相结构和相应的磨损机理。 （c）2005 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