Effects of Induction Heating Conditions on Ni-Al Based Intermetallic Compound Coating

被引：3
|
作者：
Lee, Han-Young [1 ]
Kim, Tae-Jun [2 ]
Cho, Yong-Jae [2 ]
机构：
[1] Keimyung Univ, Dept Adv Mat Engn, Taegu 704702, South Korea
[2] Keimyung Univ, Grad Sch, Dept Mat Engn, Taegu 704702, South Korea
来源：
KOREAN JOURNAL OF METALS AND MATERIALS | 2010年 / 48卷 / 02期
关键词：
intermetallics; coating; microstructure; scanning electron microscopy/X-ray diffraction; induction heating; DUCTILE CAST-IRON;
D O I：
10.3365/KJMM.2010.48.02.141
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An Ni-Al intermetallic coating has been produced by induction heating on mild steel. The effect of the induction heating conditions on the microstructure of the coating has been investigated. The reaction synthesis of the intermetallic compounds was promoted while increasing the heating rate and the holding time at reaction temperature. Especially, an NiAl phase corresponding to the initial composition of mixed powder was predominantly formed. However, the synthesis at low reaction temperatures occurred by solid state diffusion during the holding time and an Fe-Al reaction layer was formed at the interface with the substrate, regardless of the heating rate. The combustion synthesis of the intermetallic compound occurred at a temperature higher than 1023 K and resulted in an almost single phase NiAl structure.
引用
收藏
页码：141 / 147
页数：7
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