硅酸盐学报2018，Vol.46Issue(3)：328-332,5.DOI:10.14062/j.issn.0454-5648.2018.03.03
Al2O3包覆ZrO2粉体制备的热障涂层材料的结构与性能
Structure and Properties of Thermal Barrier Coating Prepared by Alumina Coated Zirconia Composite Powder
摘要
Abstract
Thermal barrier coatings with different thicknesses were prepared by a plasma spraying method with Al2O3 coated ZrO2/Y2O3 composite powder as a raw material. The phase composition and microstructure of coating were analyzed by X-ray diffraction and scanning electronic microscopy. The phase structural stability and the bonding strength as well as the high-temperature oxidation resistance were investigated. The results indicate that the thermal barrier coating is composed by stablet-zirconia phase and shows an intense bonding strength between the coating and the matrix. The coatings with different thicknesses present the similar morphological characteristics, such as the smooth surface, the clear grain boundary and the uniform grain size. However, the porosity and cracks decrease significantly with the increase of coating thickness. The oxidative weight rate of the coating increases slowly with the increase of the soaking time at 1050℃ for > 10h. Furthermore, the stability, high-temperature oxidation resistance and thermal insulation effect of the coating increase with the increase of coating thickness.关键词
氧化铝/氧化锆/粉体/热障涂层/等离子喷涂Key words
alumina/zirconia/powder/thermal barrier coating/plasma spraying分类
通用工业技术引用本文复制引用
易中周,单科,翟凤瑞,李楠,谢志鹏..Al2O3包覆ZrO2粉体制备的热障涂层材料的结构与性能[J].硅酸盐学报,2018,46(3):328-332,5.基金项目
国家自然科学基金(51362011 （）
51762015 （）
51562009) （）
红河学院中青年学术骨干培养项目(2016GG0306)和云南省科技厅项目(2016FB098)资助. （2016GG0306）
