발간논문

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Vol.35, No.7, 841 ~ 849, 1997
Title
Densification and Wear Properties of the Ni-Aluminide Intermetallic Compounds by HPCS
정중채 , 윤기석 , 양범석 , 고석권 , 원창환 Joong Chai Jung , Ki Seok Yun , Beom Seok Yang , Suk Kwon Ko , Chang Whan Won
Abstract
The superior oxidation-resistance, wear-resistance and creep-resistance make Ni-aluminide intermetallic compounds have merits for high-temperature applications. Simultaneous synthesis and densification of NiAl and Ni₃Al from elemental Ni and Al powders was investigated. Combustion synthseis was carried out under the uniaxial compressive pressure and preheating of metal mould die. It was shown that both the compressive pressure and preheating of metal mould die strongly affect the density, the grain size, the hardness and the wear loss of NiAl and Ni₃Al product. A relative density of NiAl and Ni₃Al products as much as 99.8% was achived under compressive pressure of 275㎫ and preheating temperature of 600℃.
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