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

Abstract:

Article Preview

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- (200-400m), micro- (5-10m) and sub-micropores (< 1.5m) 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.

Info:

Periodical:

Edited by:

M. Ashraf Imam, F. H. Froes, Kevin F. Dring

Pages:

165-170

DOI:

10.4028/www.scientific.net/KEM.436.165

Citation:

Y. Orlova et al., "Structure Formation during Preparation of Variable Porosity Titanium Foams by Solid State Replication", Key Engineering Materials, Vol. 436, pp. 165-170, 2010

Online since:

May 2010

Export:

Price:

$38.00

In order to see related information, you need to Login.