Paper Titles
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SiC Platelets Synthesized by Powder-Heating Technique
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Synthesis of Sialon-Mullite Composites Using Fly Ash by Carbon-Thermal Reduction Nitridation
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Carbothermal Preparation of Ultra-Fine TiB2 Powders Using Solution-Derived Precursors via Sol-Gel Method
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Large-Scale Fabrication of Ti3AlC2 Powder with High-Purity
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Study of Ti3Si1.2-xAlxC2 (x = 0~1.2) Solid Solution via X-Ray Diffraction
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Carbothermal Preparation of Ultra-Fine TiB2 Powders Using Solution-Derived Precursors via Sol-Gel Method

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Abstract:

Ultra-fine titanium diboride (TiB2) powders have been prepared by carbothermal reduction reactions in TiO2-B2O3-C system using tetrabutyl titanate, boric acid and phenolic resin as the solution-derived precursors. The reactions were substantially completed at relatively lower temperature (<1400°C) and the resulting products had a smaller average crystallite size (< 200 nm). However, below 1100°C, titanium carbide was the predominant phase and the relative content decreased with the rise of temperature. The thermodynamic change in TiO2-B2O3-C system was mainly studied by TG-DTA and the mechanism of synthesis of TiB2 was discussed. The crystallite size and morphology of the synthesized powders were characterized by SEM and TEM.

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High-Performance Ceramics IV View Preview

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

944-947

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.944

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Online since:

April 2007

Authors:

Yong Jie Yan, Zheng Ren Huang, Shao Ming Dong, Dong Liang Jiang

Keywords:

Carbothermal Reduction, Sol-Gel (SG), Titanium Diboride, Ultra-Fine

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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