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

Yuliya Orlova; K. Maekawa; Henry J. Rack

doi:10.4028/www.scientific.net/KEM.436.165

Paper Titles

Microwave Sintering and Melting of Titanium Powder for Low-Cost Processing
p.131

Microwave Sintering of Titanium
p.141

Reaction Assisted Ultrasonic Consolidated TiNi
p.149

Titanium and Titanium Alloy via Sintering of TiH₂
p.157

Structure Formation during Preparation of Variable Porosity Titanium Foams by Solid State Replication
p.165

Microstructure and Mechanical Properties of α’ Martensite Type Ti-V-Al Alloy after Cold- or Hot Working Process
p.171

Effect of Oxygen on Phase Precipitation and Mechanical Functionality in Ti-29Nb-13Ta-4.6Zr
p.179

Application of Local Rapid Heat Treatment for Improvement of Microstructure and Mechanical Properties of Titanium Products
p.185

Characterization of the Microstructure, Tensile and Creep Behavior of Powder Metallurgy Processed and Rolled Ti-6Al-4V-1B Alloy
p.195

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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.