Synthesis of B4C–TiB2 composite powders by the carbide boronizing process

B4C–TiB2 composite powders were synthesized by a carbide boronizing process, i.e. the solid state reaction between TiC and amorphous boron powders. The particle size of the raw TiC powders was found to greatly affect the phase composition of the composite powders. Nano-TiC powders could be totally c...

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Bibliographic Details
Published in:Ceramics international 2014-11, Vol.40 (9), p.15341-15344
Main Authors: Wang, Dewen, Sun, Huifeng, Deng, Qihuang, Ding, Zhihui, Ran, Songlin, Huang, Qing
Format: Article
Language:English
Subjects:
B4C
Carbide boronizing
Composite powders
Solid state reaction
TiB2
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Summary:B4C–TiB2 composite powders were synthesized by a carbide boronizing process, i.e. the solid state reaction between TiC and amorphous boron powders. The particle size of the raw TiC powders was found to greatly affect the phase composition of the composite powders. Nano-TiC powders could be totally consumed and turned into TiB2 phase with heat treatment at 1100°C for 1h whereas micro-TiC powders was still present even at 1400°C for 1h. The synthesized B4C–TiB2 composite powders have a small particle size and a homogenous phase distribution, indicating high sintering activity.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2014.06.103