Hot-Pressed TiB2 Ceramics with B4C and C Additives

Abstract:

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Effects of B4C and C additives on the densification behavior, phase composition, and microstructure of TiB2 ceramics were studied. The relative density of pure TiB2 ceramics by hot pressing at 2000°C for 1 h was only 77.4%. With the introduction of B4C and C additives, the relative density increase to 97.4% and 98.1%, respectively. The great improvement on densification was due to the removal of surface oxides of TiB2 powders by reaction with B4C and C additives. Microstructure observation showed the addition of B4C led to some TiB2 grains abnormal growth (>10 µm), whereas the addition of C produced a uniform and fine-grained microstructure.

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Edited by:

Wei Pan and Jianghong Gong

Pages:

182-184

DOI:

10.4028/www.scientific.net/KEM.434-435.182

Citation:

L. Wang et al., "Hot-Pressed TiB2 Ceramics with B4C and C Additives", Key Engineering Materials, Vols. 434-435, pp. 182-184, 2010

Online since:

March 2010

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Price:

$35.00

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