机电工程技术2024，Vol.53Issue(6)：33-36,113,5.DOI:10.3969/j.issn.1009-9492.2024.06.008
不同涂层厚度组合热障涂层系统的热分析
Thermal Analysis of Thermal Barrier Coating Systems with Different Coating Thickness Combination
摘要
Abstract
The thermal barrier coating has low thermal conductivity,high melting point and good thermal insulation,which can effectively reduce the temperature of the metal matrix.The temperature and stress fields of ceramic coating,bonding layer and matrix are analyzed by establishing thermal barrier coating system models with 6 different coating thickness combinations using finite element method,and the influence of ceramic coating thickness and bonding layer thickness on the temperature field and thermal stress of thermal barrier coating system are discussed.The analysis results indicates that the ceramic layer is a critical component of the thermal barrier coating system.It reduces the substrate temperature,thereby prolonging the equipment′s service life.Increasing the ceramic layer′s thickness by 0.1 mm reduces the substrate's maximum temperature by 4.6℃.This study suggests that to enhance the performance of thermal barrier coatings,increasing the thickness of the ceramic layer is a viable option to reduce the temperature of the substrate.However,it is important to note that solely focusing on the thickness of the ceramic layer may not be sufficient.The research also indicates that with an increase in the thickness of the ceramic layer,the thermal stresses on the ceramic layer,bonding layer,and substrate decrease.However,decreasing the thickness of the bonding layer leads to a slight increase in thermal stresses in each part.This result demonstrates the interaction and equilibrium between the different components in the thermal barrier coating system.关键词
热障涂层/有限元/温度分布/热应力Key words
thermal barrier coating/finite element method/temperature distribution/thermal stress分类
矿业与冶金引用本文复制引用
周阳,杨泽,王永超,何爱玲..不同涂层厚度组合热障涂层系统的热分析[J].机电工程技术,2024,53(6):33-36,113,5.基金项目
国家级大学生创新创业训练计划项目(202210748008) （202210748008）
青海民族大学高层次博士人才项目(23GCC21) （23GCC21）
