(中南大学 粉末冶金国家重点实验室， 长沙 410083)
摘 要: 研究了3种烧结活化剂（葡萄糖、 酚醛树脂和硬脂酸）和不同的掺碳量对碳化硼烧结的影响。发现活化剂葡萄糖优于其它两种活化剂， 以葡萄糖为活化剂， 掺碳3%， 在2270℃氢气中常压烧结1h获得的碳化硼材料密度为2.06g/cm3(相对密度82%), 这一密度高于文献中报道的采用相同粒度粉末制得的结果。
关键字: 碳化硼； 活化烧结； 烧结活化剂
（State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:The influences of carbon-doping activator (glucose, phenolic resin and stearic acid) and carbon-doping amount on sintered density of boron carbide were studied. It is discovered that glucose is much better than the others. A sintered density of 2.06g/cm3(82%TD) was obtained by doping 3% carbon using glucose as the activator precursor and pressureless sintering at temperature of 2270℃ for 1h in hydrogen. This density is higher than that of the literature reported using the powder with nearly the same particle size.
Key words: boron carbide; activated sintering; sintering activator
