Materials Transactions Online

Materials Transactions, Vol.58 No.03 (2017) pp.355-360
© 2016 The Japan Institute of Metals and Materials

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 and Zhe Huang1

1Department of Metallurgical Engineering, the University of Utah, Salt Lake City, Utah 84112, USA

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.


(Received 2016/09/07; Accepted 2016/10/17; Published 2017/02/25)

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

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