首页|Hot-Pressed TiB_2 Ceramics With B_4C and C Additives
Hot-Pressed TiB_2 Ceramics With B_4C and C Additives
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NETL
NSTL
Trans Tech Publications Ltd
Effects of B_4C and C additives on the densification behavior, phase composition, and microstructure of TiB_2 ceramics were studied. The relative density of pure TiB_2 ceramics by hot pressing at 2000℃ for 1 h was only 77.4%. With the introduction of B_4C 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 TiB_2 powders by reaction with B_4C and C additives. Microstructure observation showed the addition of B_4C led to some TiB_2 grains abnormal growth (>10 μm), whereas the addition of C produced a uniform and fine-grained microstructure.
TiB_2B_4C and C additivesdensificationmicrostructure
Li Wang、Wei-Ming Guo、Yao-Gang Li、Guo-Jun Zhang
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College of Material Science and Engineering, Dong Hua University, Shanghai 200051, China
The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
NETL
NSTL
Trans Tech Publications Ltd
