实验科学与技术2026，Vol.24Issue(1)：31-37,7.DOI:10.12179/1672-4550.20240439
热障涂层微观结构的X射线与扫描电镜研究
X-Ray and Scanning Electron Microscopy Study of the Microstructure of Thermal Barrier Coatings
摘要
Abstract
The thickness,cracks,pores,and porosity of high-temperature ceramic thermal barrier coatings are critical parameters for evaluating their thermal barrier performance.This study focuses on three-layer thermal barrier coatings,investigating their morphology,thickness,pores,and porosity from two-dimensional and three-dimensional perspectives using 3D X-ray microscopy and scanning electron microscopy.Secondary electron and backscattered electron scanning analyses of the coatings before and after service reveal a dense self-healing layer structure and the existence of porous defect areas in the inner layer.The three-dimensional images collected by 3D X-ray microscopy reveal microstructural information,such as cracks and pores,on a large scale.Through grayscale value analysis,the density and strong oxygen resistance of the self-healing layer were evaluated,and the bonding strength between the functional coatings was estimated by comparing their grayscale value differences.The results indicate that the findings from the two techniques are basically consistent,providing a feasible strategy for the comprehensive analysis of the microstructural characteristics of high-temperature ceramic thermal barrier composite coatings.关键词
热障涂层/微观结构/孔隙率/裂纹/三维X射线显微镜/扫描电子显微镜Key words
thermal barrier coatings/microstructure/porosity/cracks/3D X-ray microscope/scanning electron microscope分类
矿业与冶金引用本文复制引用
胡鹏飞,林杰,姜云,陈静涛,孙银洁,谢忱,鲁波..热障涂层微观结构的X射线与扫描电镜研究[J].实验科学与技术,2026,24(1):31-37,7.基金项目
航天材料及工艺研究所先进功能复合材料技术重点实验室一般项目(61429062202) （61429062202）
上海市科委面上项目(20010500200). （20010500200）
