MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
An Effect of Addition of NiO Powder on Pore Formation in Lotus-Type Porous Nickel
H. OnishiS. UenoH. Nakajima
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2008 Volume 49 Issue 11 Pages 2670-2672

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Abstract

Lotus-type porous nickel with cylindrical pores was fabricated by unidirectional solidification in a mixture gas of hydrogen and argon. The pore size is significantly affected by the addition of NiO powder. The pore size decreases and the number density of the pores increases by the addition of NiO. It is concluded that NiO powder can serve as nucleation sites for the pore formation in the process of the solidification.

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© 2008 The Japan Institute of Metals and Materials
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