微晶化对Ni-5Cr-5A1合金氧化产物的影响  

INFLUENCE OF MICROCRYSTALLIZATION ON OXIDATION PRODUCTS OF Ni-5Cr-5A1 ALLOY AT 1000℃

作　　者：陈国锋[1] 楼翰一[1] 

机构地区：[1]中国科学院金属腐蚀与防护研究所金属腐蚀与防护国家重点实验室,沈阳110015

出　　处：《中国腐蚀与防护学报》2000年第4期200-203,共4页Journal of Chinese Society For Corrosion and Protection

摘　　要：利用磁控溅射在Ｍ－５Ｃｒ－５Ａ１（原子分数，％）合金上制备与基体相同成分的微晶涂层．获得的涂层在 １０００℃空气中进行了氧化实验．结果表明， ２００ ｈ氧化后涂层表面生成了分层结构的氧化膜：外层为ＮｉＯ和ＮｉＡ１２Ｏ４，内层为连续致密的α－Ａ１２Ｏ３．微晶化使得Ｎｉ－Ｃｒ－Ａ１系三元合金表面生成一层连续Ａ１２Ｏ３所需的Ｃｒ、Ａ１含量大大降低．Ni-5Cr-5A1(at% ) microcrystalline coating was prepared on the substrate of the are material by magnetron sputtering. Oxidation testing are performed on the coating in air at 1000℃. The results indicated that a multi-layer oxide scale was formed on the coating after 200h oxidation which was composed of NiO and NiAl2O4 in the outer layer and α-A12O3 in the inner layer. The contents of Cr and A1 necessary for the formation of a continuous α-A12O3 layer were significantly decreased through microcrystallization.

关 键 词：NI-CR-AL 氧化 微晶涂层 高温合金 微晶化 

分 类 号：TG172.82[金属学及工艺—金属表面处理] TG174.451[金属学及工艺—金属学]