摘要
研究了TiB2、TiC、Ti三种添加剂对超细B4C粉末的无压烧结(2200℃×1h)密度的影响。结果表明,加入Ti粉末对B4C的烧结没有产生明显的影响,最高密度不超过86%理论密度;而TiB2对B4C的烧结致密化有明显的促进作用,当TiB2含量达到50%时,复合陶瓷的烧结密度达到92%理论密度;TiC对B4C的烧结致密化影响比较复杂,过少或过多时均不能获得最高的烧结密度,当TiC含量为30%时,密度达到最高值(94.5%理论密度)。B4C-TiC反应烧结陶瓷由B4C、TiB2、C三相组成。
Effects of additions of TiB2, TiC, and Ti on the pressureless sintered density of ultrafine B4C powders at 2 200℃ for 1 hour were studied. The results show that the addition of Ti can＇t promote greatly the densification of B4C, with a maximun of 86% theoretical density （TD）. But the addition of TiB2 results in much densification of B4C, with a sintered density of 92%TD for B4C-50%TiB2 composite ceramic. In addition, B4C-30%TiC composite ceramic reaches the maximum sintered density of 94.5%TD in this study.B4C-TiC reaction sintering ceramic is composed of B4C, TiB2, and C.
出处
《热加工工艺》
CSCD
北大核心
2006年第14期30-32,共3页
Hot Working Technology
关键词
碳化硼
硼化钛
无压烧结
反应烧结
密度
boron carbide
titanium boride
pressureless sintering
reaction sintering
density
