首页|Structure Formation during Preparation of Variable Porosity Titanium Foams by Solid State Replication

Structure Formation during Preparation of Variable Porosity Titanium Foams by Solid State Replication

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  • Trans Tech Publications Ltd
Fabrication of variable porosity titanium foams through incorporation of sacrificial sodium chloride powder has been investigated. A three-dimensional solid foam pore skeleton containing macro-(200-400μn), micro- (5-10μm) and sub-micropores (< 1.5μm) was formed during high temperature sintering of commercial purity titanium powder containing sacrificial sodium chloride particles, faceting of the interior pore powder surface being noted throughout. The largest macro-pores had a cubical topography representative of the sodium chloride powder that had been vaporized during heating to the sintering temperature. Formation of the smaller micro-pores appeared to have occurred during the compaction process these being retained in the specimen body due to incomplete sintering of the host powder. Finally formation of the smallest sub-micropores was associated with high temperature gas evolution and entrapment during sodium chloride vaporization.

titaniumfoamsodium chlorideporesstructure

Yu. Orlova、K. Maekawa、H.J. Rack

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Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan The Research Center for Superplasticity, College of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, 316-0036, Japan

The Research Center for Superplasticity, College of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, 316-0036, Japan

School of Materials Science and Engineering, Clemson University, 213 A Olin Hall Clemson, South Carolina, 29634 - 0971, USA

2010

10.4028/www.scientific.net/KEM.436.165

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.436
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