EB-PVD热障涂层热循环性能评价方法研究  

Evaluation Method of Thermal Cycling Property of EB-PVD Thermal Barrier Coatings

作　　者：陈立强[1] 宫声凯[2] 徐惠彬[2] 

机构地区：[1]中国石油大学(北京),北京102249 [2]北京航空航天大学,北京100083

出　　处：《稀有金属材料与工程》2013年第2期340-344,共5页Rare Metal Materials and Engineering

基　　金：高等学校博士学科点专项科研基金(20070425015)

摘　　要：制备8批次EB-PVD双层结构热障涂层试样,采用循环加热快速冷却实验装置模拟热障涂层服役环境,开展了热障涂层试样在不同热循环保温时间条件下的热循环性能评价实验,采用指数下降的数学模型对热循环实验数据进行拟合分析,获得了表征热障涂层试样静态氧化性能和热疲劳性能的物理量。结果表明,在本实验工艺条件下制备的不同批次热障涂层试样的静态氧化性能和热疲劳性能具有不同的匹配关系,热障涂层试样静态氧化性能总体估计值为(677±194)h,热疲劳性能总体估计值为(6789±1818)次。Thermal cycling testing to the 8 batches of thermal barrier coating samples for different holding time was carried out by means of cycling heating and cooling apparatus to simulate TBCs service environment. Using a mathematical model of exponential decline to fit thermal cycle experimental data, characterization parameters of static oxidation performance and thermal fatigue performance of thermal barrier coated samples were obtained. The result indicates that static state oxidation performance and thermal fatigue performance of TBCs samples prepared under present experimental technology conditions have different match relation. The estimated value for static state oxidation performance is 677±194 h, and the estimated value for thermal fatigue performance is 6789±1818 times.

关 键 词：EB-PVD 热障涂层 热循环 高温氧化 热疲劳 

分 类 号：TG174.453[金属学及工艺—金属表面处理]