The mechanism of oxidation of sputtered Ni-Cr-Al nanocrystalline coatings

被引：0
|
作者：
Chen, GF [1 ]
Lou, HY [1 ]
机构：
[1] Acad Sinica, State Key Lab Corros & Protect Met, Shenyang 110015, Peoples R China
来源：
CORROSION REVIEWS | 2000年 / 18卷 / 2-3期
关键词：
nanocrystalline coatings; sputtering; Ni-Cr-Al; oxidation;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Complex layered oxide scales composed of a complete inner layer of alpha-Al2O3 were formed on the formerly Cr203-forming alloy Ni-8Cr-3.5Al (wt%) and the NiO-forming alloy Ni-5Cr-5Al (at%) through nanocrystallization. Due to the formation of the inner layer of alpha-Al2O3, Ni-8Cr-3.5Al (wt%) and Ni-5Cr-5Al (at%) alloys with nano-sized grain were all Al2O3-formers. The results indicated that the oxide types of Ni-Cr-Al alloys could be altered through nanocrystallization. In this paper, the mechanism of oxidation for two Al2O3-forming sputtered Ni-8Cr-3.5Al (wt%) and Ni-5Cr-5Al (at%) nanocrystalline coatings on the substrates of the same alloys was proposed based upon the interaction of Cr and Al during oxidation process.
引用
收藏
页码：195 / 204
页数：10
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