Synthesis of submicrometer titanium carbide powders
- 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, Vol. 80, Issue 4; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
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