PM Non-Ferrous and Special Materials: Compaction and Densification Behaviour of Titanium Hydride Powder

The use of hydride powders in titanium powder metallurgy is a cost effective alternative since the dehydrogenation of powders occurs along with the vacuum sintering process. In this study, compaction and densification behaviour of titanium hydride powder were investigated. Compaction behaviour was w...

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Bibliographic Details
Published inEuropean Congress and Exhibition on Powder Metallurgy. European PM Conference Proceedings p. 1
Main Authors Petroni, S L G, Galvani, E T, Cairo, C A A, Girotto, C C, Henriques, V A R
Format Conference Proceeding
LanguageEnglish
Published Shrewsbury The European Powder Metallurgy Association 01.01.2014
Subjects
Atoms & subatomic particles
Carbon
Experiments
Mathematical models
Nitrogen
Particle size
Powder metallurgy
Raw materials
Sintering
Studies
Zinc
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Summary:The use of hydride powders in titanium powder metallurgy is a cost effective alternative since the dehydrogenation of powders occurs along with the vacuum sintering process. In this study, compaction and densification behaviour of titanium hydride powder were investigated. Compaction behaviour was well represented by a theoretical model developed for titanium powders, which accurately describes the mechanisms of rearrangement and deformation of powder particles. Densification of green compacts was favored by the release of hydrogen atoms during sintering, resulting in sintered density values higher than those obtained for titanium hydride-dehydride. The use of an admixed lubricant significantly improved the ejection of green compacts with no evidence of contamination by interstitial elements.