中文摘要：

采用碳热还原法制备了碳化硼粉末样品,讨论了硼碳比、煅烧合成和粉碎过程等工艺参数对其粉末性能的影响。借助XRD分析手段测试了其成分,并用化学方法分析了粉末的总碳含量,用激光粒度分布仪测试了其粒度分布。实验结果表明：以工业用硼酸和炭黑为原料,在1700～1850℃、保温0.5～1h煅烧合成能制得纯度较高的碳化硼粉末。其总碳含量为20.7%,接近理论值。中位径为32.56μm,经球磨粉碎后,其中位径可以达到2.42μm。

英文摘要：

The boron carbide power was manufactured by carbothermal reduction method. The parameters which may have great influence to its performance are also discussed. The composition was analyzed by X-ray diffraction （XRD） . The total carbon content was analyzed by chemical method. The particle size distribution was tested by laser particle size analyzer. Experimental results show that when the boric acid and carbon black were selected as starting materials, sintered at 1700-1850℃ for 0.5-1h, high purity boron carbide power can be got. The total carbon content was 20.7%, which is close to the theoretical value. After milling, the median diameter can reach 2.42 μ m from 32.56 μm.