NiCrAlYSi涂层/IC6合金基体界面区微观结构的TEM研究  

TEM STUDY ON THE MICROSTRUCTURE OF THE NiCrAlYSi COATING/IC6 ALLOY SUBSTRATE

作　　者：邢占平[1] 韩雅芳 程志英[2] 

机构地区：[1]北京航空材料研究院,北京100095 [2]清华大学材料工程系,北京100084

出　　处：《金属学报》1998年第11期1149-1153,共5页Acta Metallurgica Sinica

基　　金：国家863计划资助!715-005-0020

摘　　要：利用真空电弧镀技术在Ni3Al则基合金IC6上沉积NiCrAlYSi涂层．并进行1100℃／100周期的周期氧化实验，然后采用TEM研究了氧化后的涂层与基体界面区的微观结构结果表明，涂层主要由γ孪晶相组成，但在γ孪晶板条内部分布着细小的γ’析出相，它与γ相完全共格在由γ＋γ’两相组成的基体影响区内．其γ相内部也存在着细小γ’析出相.Using vacuum arc deposition technology NiCrAlYSi coating was deposited on the Ni3Al based alloy IC6. The microstructure between the coating and the substrate interface was investigated by the transmission electron microscopy (TEM). The results show that the coating mainly consisted of the γ twins, but the fine γ' precipitates existed in the γtwin plates. These precipitates were coherent with the γ phases. In the influence zone which consisted of γ+γ' phases, fine γ'precipitates also existed in the γ phases.

关 键 词：NI3AL 防护涂层 界面 微观结构 耐热合金 

分 类 号：TG132.3[一般工业技术—材料科学与工程] TG174.44[金属学及工艺—合金]