• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Failure of multi-layer graphene coatings in acidic media
【24h】

Failure of multi-layer graphene coatings in acidic media

机译：酸性介质中多层石墨烯涂层失效

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

摘要

Being impermeable to all gases, graphene has been proposed as an effective ultrathin barrier film and protective coating. However, here it is shown how the gastight property of graphene-based coatings may indirectly lead to their catastrophic failure under certain conditions. When nickel coated with thick, high-quality chemical vapor deposited multilayered graphene is exposed to acidic solutions, a dramatic evolution of gas is observed at the coating–substrate interface. The gas bubbles grow and merge, eventually rupturing and delaminating the coating. This behavior, attributed to cathodic hydrogen evolution, can also occur spontaneously on a range of other technologically important metals and alloys based on iron, zinc, aluminum and manganese; this makes these findings relevant for practical applications of graphene-based coatings.
机译：对于所有气体不透水，已经提出了石墨烯作为有效的超薄阻隔膜和保护涂层。然而，在这里，显示了石墨烯的涂层的恶劣性能如何在某些条件下间接导致其灾难性失败。当涂有厚的高质量化学气相沉积的多层石墨烯的镍暴露于酸性溶液中时，在涂层衬底界面处观察到气体的显着演化。气泡生长并合并，最终破裂和分层涂层。这种行为归因于阴极氢进化，也可以自发地发生基于铁，锌，铝和锰的一系列其他技术重要的金属和合金;这使得这些发现与石墨烯的涂料的实际应用相关。

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