...
首页> 外文期刊>CERAMICS INTERNATIONAL >Fabrication of thick YSZ thermal barrier coatings using electrophoretic deposition
【24h】

Fabrication of thick YSZ thermal barrier coatings using electrophoretic deposition

机译:电泳沉积法制备厚YSZ热障涂层

获取原文
获取原文并翻译 | 示例
           

摘要

Electrophoretic deposition (EPD) is a cheaper and more flexible method in the application of thermal barrier coatings (TBCs) compared with the conventional coating techniques, e.g. air-plasma-spray (APS) and electron beam physical vapour deposition (EBPVD). However, the EPD coating thickness tends to be restricted to a critical value (about 100 μm), which becomes its major concern as normally 200-400 μm thickness is required for an effective thermal protection. In this study, the thickness restriction had been overcome by (1) using large-size particles for EPD; (2) adding 1-2 mol% Fe_2O_3 as sintering aid; and (3) applying a gradient voltage to counterbalance the increasing resistance of the non-conductive deposits. These techniques enabled the fabrication of uniform and crack-free YSZ top-coat with a thickness of 300-400 μm by EPD. Compared with the APS coatings, the EPD coatings possess more favourable microstructure with uniformly distributed porosity and stronger bonding at the substrate/coating interface.
机译:与传统的涂层技术相比,电泳沉积(EPD)是在热障涂层(TBC)的应用中更便宜,更灵活的方法。空气等离子喷涂(APS)和电子束物理气相沉积(EBPVD)。然而,EPD涂层的厚度趋于被限制在临界值(约100μm),这成为其主要关注点,因为通常为了有效的热保护需要200-400μm的厚度。在这项研究中,通过以下方法克服了厚度限制:(1)使用大尺寸颗粒作为EPD; (2)加入1-2mol%的Fe_2O_3作为烧结助剂; (3)施加梯度电压以平衡非导电沉积物的增加的电阻。这些技术使EPD能够制造出厚度为300-400μm的均匀且无裂纹的YSZ面漆。与APS涂层相比,EPD涂层具有更好的微观结构,具有均匀分布的孔隙率,并且在基材/涂层界面处具有更强的粘结性。

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