表面技术2017，Vol.46Issue(9)：1-6,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.09.001
Sm2Ce2O7/YSZ功能梯度热障涂层的残余热应力
Residual Thermal Stress of Sm2Ce2O7/YSZ Functional Graded Thermal Barrier Coatings
摘要
Abstract
The work aims to study effects of substrate material, thickness and radius on residual thermal stress of Sm2Ce2O7/YSZ functional graded thermal barrier coatings. By using Plane 13 element in ANSYS10.0 software and directional coupling calculation, the residual thermal stress of Sm2Ce2O7/YSZ functional graded thermal barrier coatings under different substrate conditions was analyzed systematically. Higher residual thermal stresses were present in the coatings. The residual thermal stress gradually decreased as increasing time prolonged, and basically stayed at stable value after 900 s. Radial stress of the coatings reduced from sample center to edges, and coating stress of 2Cr13-coating was the smallest. The radial thermal stress of the coatings was relative stable as metallic substrate thickness ranged from 2 to 10 mm, and increased significantly as metallic substrate thickness was 20 mm. Radius of the substrate had no effect on maximum shear stress of the coatings, axial stress de-creased gradually as substrate radius increased, and the radial thermal stress tended to be stable as it reached a certain value. The 2Cr13-steel coating has the lowest residual thermal stress, appropriate substrate thickness is 10 mm, and the substrate radius has the most obvious effect on axial thermal stress.关键词
有限元模拟/热障涂层/残余热应力/基体条件Key words
finite element simulation/thermal barrier coatings/residual thermal stress/substrate condition分类
矿业与冶金引用本文复制引用
张昊明,李振军,桑玮玮,李刚,张红松,晁明举..Sm2Ce2O7/YSZ功能梯度热障涂层的残余热应力[J].表面技术,2017,46(9):1-6,6.基金项目
国家自然科学基金项目(U1304512) （U1304512）
河南省科技攻关计划项目(172102210208) （172102210208）
郑州市科技攻关计划项目(153PKJGG135) Supported by National Natural Science Foundation of China (U1304512) （153PKJGG135）
the Scientific and Technological Projects of Henan Province (172102210208) （172102210208）
the Scientific and Technological Projects of Zhengzhou City (153PKJGG135) （153PKJGG135）
