硅酸盐学报2017，Vol.45Issue(7)：995-999,5.DOI:10.14062/j.issn.0454-5648.2017.07.16
改进十字交叉法评价热障涂层界面结合强度
Evaluation of Interfacial Bond Strength of Thermal Barrier Coating by Improved Cross-bonded Method
摘要
Abstract
Interfacial bond strength is one of the vital mechanical properties of thermal barrier coating. The cross-bonded method, which can measure the interfacial tensile and shear bond strength, has attracted recent attention. However, some imperfects of this method were found in practice. In this paper, improved cross-bonded sample and fixture were represented and the tests were carried out to 8YSZ thermal barrier coating. The results show that the tensile bond strength of 8YSZ thermal barrier coating is (23.68±1.56) MPa and the shear bond strength is (25.88±2.14)MPa, and the type of fracture is both interface/coating fracture. In the shear tests, interface is subjected to a pure shear stress, without the influence from the strength of adhesives. And an improved technique effectively avoids a possible friction between the fixture and sample in tensile bond strength test, thus enhancing the accuracy of results.关键词
改进十字交叉法/热障涂层/界面结合强度Key words
improved cross-bonded method/thermal barrier coating/interfacial bonding strength分类
数理科学引用本文复制引用
马德隆,包亦望,万德田,孙与康..改进十字交叉法评价热障涂层界面结合强度[J].硅酸盐学报,2017,45(7):995-999,5.基金项目
国家自然科学基金(51172221,51472227) （51172221,51472227）
科技部重大仪器专项项目(2011YQ140145) （2011YQ140145）
"863"计划(2015AA034204)项目. （2015AA034204）
