Fabrication of lotus-type porous NiAl and Ni3Al intermetallic compounds

被引:5
|
作者
Ide, Takuya [1 ]
Tane, Masakazu [1 ]
Nakajima, Hideo [1 ]
机构
[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan
关键词
D O I
10.4028/www.scientific.net/SSP.124-126.1721
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Lotus-type porous NiAl and Ni3Al intermetallic compounds, possessing cylindrical pores aligned in the direction parallel to the solidification direction, were fabricated by using a unidirectional solidification technique in a pressurized hydrogen atmosphere of 2.5MPa. The porosity of lotus NiAl is 24.2%, and the porosity of lotus Ni3Al is 3.2%; the porosity of the porous NiAl is larger than that of Ni3Al. This is because the solubility gap of hydrogen between liquid and solid phases of NiAl is larger than that of N(i)3Al.
引用
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页码:1721 / +
页数:2
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