CAJ | 학술논문

通过磁控溅射手段在NiCrAlY合金表面成功制备了1层Al膜,并比较了镀Al粘结层和不镀Al粘结层在1200℃循环氧化的性能.结果表明,磁控溅射镀Al,制得表面Al膜厚度在2μm左右,NiCrAlY合金层内部的组分并无变化.这层Al膜有助于在表面形成1层分布连续、排列紧密的α-Al_2O_3层,降低了合金层的循环氧化增重速率,延长了涂层开裂脱落时间,使NiCrAlY合金表现出了比较好的抗循环氧化性能.
통과자공천사수단재NiCrAlY합금표면성공제비료1층Al막,병비교료도Al점결층화불도Al점결층재1200℃순배양화적성능.결과표명,자공천사도Al,제득표면Al막후도재2μm좌우,NiCrAlY합금층내부적조분병무변화.저층Al막유조우재표면형성1층분포련속、배렬긴밀적α-Al_2O_3층,강저료합금층적순배양화증중속솔,연장료도층개렬탈락시간,사NiCrAlY합금표현출료비교호적항순배양화성능.
Al films were fabricated on the surface of NiCrAlY alloy by means of magnetron sputtering technique.Cyclic oxidation Behaviors of coat with Al deposited and coat without Al deposited were investigated at 1200℃.The results indicated that the thickness of Al film was about 2μm, and the inner element ratio was not changed.The Al film was positive to form continuous, compact and protective a-A1_2O_3 layer on the surface of NiCrAlY alloy. The oxidation speed was slowed down by protective layer and the desquamation of oxide was delayed. The performance of oxygenation resistance was improved.