电子束物理气相沉积热障涂层抗冲蚀性能研究  

Research on erosion resistance of EB-PVD thermal barrier coatings

作　　者：蔡妍[1] 李建平[1] 何利民[1] 牟仁德[1] 黄光宏[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《真空》2014年第2期27-30,共4页Vacuum

摘　　要：本文采用真空电弧镀技术(AIP)在DZ408高温合金基体上沉积HY3(NiCrAlYSi)金属粘结层,采用电子束物理气相沉积技术(EB-PVD)在HY3粘结层上沉积YSZ陶瓷面层,研究了热障涂层的抗冲蚀性能。对于沉积热障涂层的试样进行了抗冲蚀试验,来评价其抗冲蚀性能,通过扫描电镜(SEM)分析冲蚀前后的试样显微形貌,用X-射线衍射仪分析涂层的相结构,通过质量冲蚀率对涂层抗冲蚀性能进行表征。试验结果表明在相同冲蚀条件下,TBC涂层冲蚀率随冲蚀时间的增加而增加;涂层经光饰处理后降低了TBC的表面粗糙度,提高了TBC的抗冲蚀能力。HY3 （NiCrAlYSi）bond coating was deposited on DZ408 nickel super-alloy substrate by arc ion plating（AIP）and then YSZ top ceramic coating was deposited by electron beam physical vapor depositing （EB-PVD）and the anti-erosion performance was studied . Erosion test was carried out to investigate the anti-erosion behavior of the specimens with SEM and XRD to analyze the micro-morphology and phase structure . It was found that the erosion rate of thermal barrier coating（TBC） is increasing with erosion time . The roughness of TBC is decreased by polishing treatment , meanwhile the erosion resistance performance of TBC is improved .

关 键 词：冲蚀 热障涂层 电子束物理气相沉积 电弧离子镀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]