Synthesis and Characterization of Ti-B System Ceramics Prepared by Self-Propagating High-Temperature Synthesis Method

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J. Korean Ceram. Soc. > Volume 28(3); 1991 > Article

Journal of the Korean Ceramic Society 1991;28(3): 234.

SHS법에 의한 Ti-B 계 세라믹스의 합성 및 소결특성

이형복, 최일선, 오응주¹, 여철현²

명지대학교 무기재료공학과
¹명지대학교 화학과
²연세대학교 화학과

Synthesis and Characterization of Ti-B System Ceramics Prepared by Self-Propagating High-Temperature Synthesis Method

ABSTRACT

Ti-B system ceramics were prepared by the self-propagating high-temperature synthesis method from the mixture of metal titanium and boron powders The major crystalline phase as a function of boron content was TiB for mixtures containing 0.5 or 1.0mol B, and TiB2 for these containing over 1.3mol B. The combustion mode observed by a high-speed camera was steady-state. The Combustion velocity increased with increasing the boron content. Sintered TiB2 specimen showed the density of 97% of theoretical valve, Vicker's hardness of 2250kg/㎟ for 0.2kg load and three-point-flexure strength of 500MPa.