材料工程2017，Vol.45Issue(7)：1-6,6.DOI:10.11868/j.issn.1001-4381.2015.001109
等离子喷涂-物理气相沉积制备7YSZ热障涂层及其热导率研究
Preparation and Thermal Conductivity of 7YSZ Thermal Barrier Coatings Prepared by Plasma Spray-physical Vapor Deposition
摘要
Abstract
The 7YSZ thermal barrier coating was prepared with three different process parameters by plasma spraying-physical vapor deposition(PS-PVD).The phase structure and microstructure of the coating were analyzed using XRD and SEM methods, and the thermal conductivity of coating was measured under different temperatures using laser pulse method.The results show that PS-PVD technology can prepare YSZ thermal barrier coating with different structures of columnar section,dense lamellar and column-particle mixed structure with surface "cauliflower" shape or undulating peaks by adjusting the process parameters, such as the current and plasma gas composition.Phase structure of 7YSZ coating is transformed from m-ZrO2 powder to t-ZrO2 coating in the process of preparation and stays in room temperature.The thermal conductivity of 7YSZ coating increases with the rising of temperature between 700-1100℃, the columnar crystal coating with higher porosity can effectively reduce the thermal conductivity of coating and the thermal conductivity is 1.0-1.2W·m-1·K-1;while layered crystal coating is dense with relatively higher thermal conductivity.关键词
等离子喷涂-物理气相沉积/7YSZ/热障涂层/热导率Key words
plasma spray-physical vapor deposition/7YSZ/thermal barrier coating/thermal conductivity分类
化学化工引用本文复制引用
袁佟,邓畅光,毛杰,邓春明,邓子谦..等离子喷涂-物理气相沉积制备7YSZ热障涂层及其热导率研究[J].材料工程,2017,45(7):1-6,6.基金项目
国家973计划资助项目(2012CB625100) （2012CB625100）
广东省对外合作资助项目(2013B050800027) （2013B050800027）
