Paper Title:
Structure Formation during Preparation of Variable Porosity Titanium Foams by Solid State Replication
  Abstract

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, K. Maekawa, H. J. Rack, "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
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$32.00
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