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Synthesis of Titanium Carbide by Heat Treatment of TiH2 and Carbon Black Powders

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Abstract:

TiC cermet is widely used for working dies with a high hardness and tool materials. In this research, we attempted to produce submicron sized TiC powders from the ball milled TiH2 and carbon black mixture by thermal treatment. The titanium hydride and carbon composite powders were milled under argon atmosphere for 7 hours at various ball to powder ratios. At the initial stage, an increase in particle size was observed, and graphite phase disappered. The TiC phase of 300nm mean particle size was obtained by milling for 5 hours. As a result, its morphologies were excessively agglomerated. At the heat treating temperature of 500°C, TiH2 phase transformed to Ti completely and the complete TiC of lattice parameter 0.431 nm was formed when the temperature reached 1000°C. Metal matrix composites(MMCs) based on the Fe-TiC system can be synthesized by spark plasma sintering. Specimen formed sintering Fe-TiC powders display a microstructure of uniformly dispersed TiC grain in a continuous metal matrix.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

225-228

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.225

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Online since:

January 2007

Authors:

In Sup Ahn, Sung Yeal Bae, Ho Jung Cho, Chul Jin Kim, Dong Kyu Park

Keywords:

Cermet, Mechano-Chemical Reaction, Spark Plasma Sintering (SPS), TiC, TiH2

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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