Transactions of the Materials Research Society of Japan
Online ISSN : 2188-1650
Print ISSN : 1382-3469
ISSN-L : 1382-3469
Regular Papers
Production of Ni-Al Foams with Hierarchical Porosity
Seksak AsavavisithchaiBenjaporn LorlekpechSupachart Muangyai
著者情報
ジャーナル フリー

2015 年 40 巻 3 号 p. 261-265

詳細
抄録

Open-cell nickel aluminide (Ni-Al) intermetallics foams have attracted much attention in industries at which high temperature and severe environment are concerned, due to their good physical and chemical properties. A combination of different pore structures and morphologies in a single monolithic matrix can extend the properties of a material from which a wide range of applications can be applied. In the present study, open-cell Ni-Al intermetallic foams with hierarchical porosities have been developed through a sintering and dissolution process (SDP) and reactive synthesis techniques. The carbamide particles of various contents were used as a space holder material to create macropores in the foams. Micropores were formed as the result of to the formation of initial fine pores between the powders in the compacts, the volatilization of gases evolved during reactive sintering and different diffusion coefficients between Ni and Al. After sintering, only Ni3Al is present in the matrix.

著者関連情報
© 2015 The Materials Research Society of Japan
前の記事 次の記事
feedback
Top