Comparison of sintering of titanium and titanium hydride powders

Robertson, I. M. and Schaffer, G. B. (2010) Comparison of sintering of titanium and titanium hydride powders. Powder Metallurgy, 53 1: 12-19. doi:10.1179/003258909X12450768327063

Author Robertson, I. M.
Schaffer, G. B.
Title Comparison of sintering of titanium and titanium hydride powders
Journal name Powder Metallurgy   Check publisher's open access policy
ISSN 0032-5899
Publication date 2010-03-01
Sub-type Article (original research)
DOI 10.1179/003258909X12450768327063
Volume 53
Issue 1
Start page 12
End page 19
Total pages 8
Place of publication Leeds, W Yorks, U.K.
Publisher Maney Publishing
Language eng
Formatted abstract
The cold compaction and vacuum sintering behaviour of a Ti powder and a Ti hydride powder were compared. Master sintering curve models were developed for both powders. Die ejection force, green strength and green porosity were lower for hydride powder than for Ti powder, all probably resulting from reduced cold welding and friction during compaction. For sintering temperatures above ~1000°C, most of the difference in the sintered density of Ti and hydride is explained by assuming equal densification, while taking into account the lower green porosity of compacts made from hydride powder. However, there is evidence that particle fracture during compaction also contributes to increased sintered density for hydride powder. The Ti powder conformed to a master sintering curve model with apparent activation energy of 160 kJ mol-1. The activation energy for Ti hydride also appeared to be about 160 kJ mol-1, but the model did not fit the experimental data well.
© 2010 Institute of Materials, Minerals and Mining
Keyword Titanium
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Official 2011 Collection
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Created: Sun, 16 May 2010, 10:01:21 EST