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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.58  No.3 (2017)  >  pp.355-360

MATERIALS TRANSACTIONS
<<Previous article Vol.58  No.3 (2017)   pp.355 - 360 Next article>>

Hydrogen Assisted Magnesiothermic Reduction (HAMR) of Commercial TiO2 to Produce Titanium Powder with Controlled Morphology and Particle Size

Yang Xia1), Z. Zak Fang1), Ying Zhang1), Hyrum Lefler1), Tuoyang Zhang1), Pei Sun1), Zhe Huang1)
1) Department of Metallurgical Engineering, the University of Utah

A two-step thermochemical reduction was developed to remove oxygen from commercial titanium dioxide, TiO2, producing metallic titanium powder. The first step was to remove >95% of the oxygen by Mg reduction in a hydrogen atmosphere, followed by a de-oxygenation step. The goal is to produce Ti powder that meets the standard specifications for titanium. Several ancillary steps including granulation and heat treatment were introduced to modify the powder morphology, particle size and powder density to make the powder suitable for a range of applications. Detailed compositional analysis indicated that the final product meets the ASTM B299 for general-purpose titanium sponge. The powder can be irregularly shaped or spherical with different granulation treatments.




Keyword:
magnesiothermic reduction, hydrogen, titanium powder, titanium oxide

Received: September 07, 2016
Accepted: October 17, 2016 , Published online: February 25, 2017

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