无机材料学报2011，Vol.26Issue(10)：1101-1104,4.DOI:10.3724/SP.J.1077.2011.01101
固相反应法合成碳化硼纳米粉体
Synthesis of Boron Carbide Nano Powder by Solid State Reaction
摘要
Abstract
Boron carbide (B4C) powder was synthesized by solid state reaction of hexagonal boron nitride with carbon black (or graphite). The phase assemblages of synthesized powders were influenced by carbon source, atmosphere and temperature. Boron carbide powder with an average particle size of about 100 nm was obtained using carbon black as the carbon source at 1900℃ for 5 h in vacuum. The relative density of the sintered sample (2000℃/30 Mpa/1 h) derived from the synthesized powder reached 97.9%, while that prepared from the commercial powder was 93.1%. The better sinterability of the synthesized powder than the commercial one can be attributed to the finer particle size, lower oxygen content and the twin structure of the powder.关键词
碳化硼/氮化硼/炭黑/纳米粉体Key words
boron carbide/ boron nitride/ carbon black/ nano powder分类
化学化工引用本文复制引用
曾洪,阚艳梅,徐常明,王佩玲,张国军..固相反应法合成碳化硼纳米粉体[J].无机材料学报,2011,26(10):1101-1104,4.基金项目
国家自然科学基金(50972152,51002169) （50972152,51002169）
