Effect of FeAl layer on ceramic coating fabricated on aluminized steel

被引：0
|
作者：
Wu Zhenqiang [1 ,2 ]
Xia Yuan [1 ]
Li Guang [1 ]
Xu Fangtao [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷
关键词：
hot-dip aluminum; plasma electrolytic oxidation; hole; interfacial crack; FeAl layer;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The FeAl alloy layer is often formed at Fe/Al interface of hot-dip aluminized steel. The effects of FeAl layer on surface morphologies, cross-sectional micro structures, phase structures and element distributions of ceramic coatings fabricated by plasma electrolytic oxidation (PEO) on aluminized steel were investigated in this paper. The results show that the 50 similar to 80 mu m holes appear in ceramic coating, and many micro-cracks are observed at the hole/FeAl interface when FeAl layer participates in PEO process. EDS results of ceramic coatings reveal that the atom percent of element Fe and Na near the hole have increased by about 8 times than other regions. Ceramic coating is mainly composed of gamma-Al2O3, alpha-Al2O3 and Fe3O4 phases. Compared to FeAl alloy layer, PEO ceramic coating has higher hardness and more excellent plastic deformation performance.
引用
收藏
页码：692 / 696
页数：5
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