• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Nanostructured Environmental Barrier Coatings for Corrosion Resistance in Recovery Boilers.
【24h】

Nanostructured Environmental Barrier Coatings for Corrosion Resistance in Recovery Boilers.

机译：用于回收锅炉耐腐蚀性能的纳米结构环境屏障涂料。

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

Corrosion of components in a recovery boiler is a major problem faced by the pulp and paper industry. The superheater tubes get severely corroded due to the presence of hot sulphidic gases in the boiler as well as the hot molten salts which get deposited on the surface of the tubes. As a result, the boiler has to be shut down for expensive maintenance and repairs. This thesis examines the possibility of using air plasma sprayed (APS) yttria-stabilized zirconia (YSZ) environmental barrier coatings (EBC) to protect against molten salt corrosion of superheater tubes. Conventional YSZ and nanostructured YSZ samples were prepared and exposed to different environments to check their resistance to corrosion. The performances of both types of coatings were evaluated and a comparative study was made. It was found that the nanostructured YSZ samples protected the stainless steel substrate better than the its conventional counterpart. This superior performance was attributed to the presence of semi-molten nano agglomerates present in the coating microstructure which act as collection bags for the penetrating molten salts.
机译：再生锅炉中部件的腐蚀是纸浆和造纸工业面临的主要问题。由于锅炉中存在热的硫化气体以及沉积在管表面的热熔盐，导致过热器管严重腐蚀。结果，必须关闭锅炉以进行昂贵的维护和修理。本文研究了使用空气等离子喷涂（APS）氧化钇稳定的氧化锆（YSZ）环境屏障涂层（EBC）来防止过热管熔盐腐蚀的可能性。制备了常规的YSZ和纳米结构的YSZ样品，并将其暴露在不同的环境中以检查其耐腐蚀性。评价了两种涂料的性能，并进行了比较研究。发现纳米结构的YSZ样品比传统的不锈钢对不锈钢基材的保护效果更好。这种优异的性能归因于存在于涂层微结构中的半熔融纳米团聚体，它们充当渗透性熔盐的收集袋。

著录项

  • 作者

    Rao, Shishir.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Mechanical.;Nanotechnology.
  • 学位 M.S.
  • 年度 2011
  • 页码 110 p.
  • 总页数 110
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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