Synthesis of submicrometer titanium carbide powders

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1997.tb02926.x· OSTI ID:509236

Koc, R; Folmer, J S ^[1]

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1. Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mechanical Engineering and Energy Processes

A novel synthesis process, based on a carbothermal reduction of titania, has been developed for producing high-purity, submicrometer, and nonagglomerated titanium carbide powders. The process utilizes a carbothermic reduction reaction of novel coated precursor powders that has potential as a high-quality (submicrometer and high-purity) powder synthesis route. The precursor is derived from a titania (TiO{sub 2}) and a hydrocarbon (C{sub 3}H{sub 6}) gas and provides high contact area between the reactants. This yields a better distribution of carbon within the titania and inhibits the agglomeration among the titania particles, resulting in a more complete reaction and a purer product at a comparatively low temperature. The TiC powders produced at 1,550 C for 4 h under argon gas flow have oxygen content of 0.6 wt% and total carbon content of 22.9 wt %, a very fine particle size (<0.1 {micro}m) (surface area of about 20 m{sup 2}/g), uniform shape, and loose agglomeration.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 509236
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 4 Vol. 80; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON
CHEMICAL REACTIONS
HYDROCARBONS
POWDERS
REDUCTION
SURFACE COATING
SYNTHESIS
TITANIUM CARBIDES
TITANIUM OXIDES