• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Surface & Coatings Technology >Effect of copper content on the properties of graphite-copper composites formed using the plasma spray process
【24h】

Effect of copper content on the properties of graphite-copper composites formed using the plasma spray process

机译：铜含量对使用等离子喷涂工艺形成的石墨铜复合材料性能的影响

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

Graphite-copper composite coatings are often used for the production of electrical machines because they are characterized by stable electrical and mechanical properties. The plasma spraying method was used to form such coatings in this work, as we aimed to evaluate the influence of copper content in the initial powders on the properties of graphite-copper composite coatings. The graphite-copper coatings were deposited on stainless steel and quartz glass substrates, as the copper content of the initial powder ranged from 2 to 60%. As shown by SEM studies, at small amounts of copper (up to 10%) in the initial powder the micro-derivatives of the spherical form are formed on the coatings. Meanwhile, XRD analysis have shown that mechanical stresses due to different thermal expansion coefficients between the coating and the substrate are characteristic for graphite-copper coatings. The measurements of electrical conductivity shown that the maximum electrical conductivity (of 10 S) is obtained when the copper content in the initial powder reaches 20%. Despite the increase of the copper content in the initial powder above 20% the electrical conductivity of the coatings remain constant. The microhardness studies have shown that with the increase of copper content in initial powder from 2 to 60%, the microhardness of graphite-copper composite coatings is reduced by about 2 times, while the plasticity increase from 11 to 19% is observed.
机译：石墨铜复合涂层通常用于生产电机，因为它们的特征在于稳定的电气和机械性能。等离子体喷涂方法用于在这项工作中形成这种涂层，因为我们旨在评估初始粉末在石墨铜复合涂层的性质上的铜含量的影响。将石墨铜涂层沉积在不锈钢和石英玻璃基材上，因为初始粉末的铜含量为2至60％。如SEM研究所示，在初始粉末中以少量铜（最多10％）在初始粉末中，在涂层上形成球形的微衍生物。同时，XRD分析表明，由于涂层和基材之间的不同热膨胀系数导致的机械应力是石墨铜涂层的特征。当初始粉末中的铜含量达到20％时，获得导电率的测量结果表明，获得最大电导率（10秒）。尽管初始粉末中的铜含量增加了20％的铜含量，但涂层的电导率保持恒定。显微硬度研究表明，随着初始粉末的铜含量的增加，石墨铜复合涂层的微硬度降低约2次，而观察到从11至19％的可塑性增加。

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