无机材料学报

• 研究论文 • 上一篇    下一篇

细颗粒掺杂石墨高温热导率的研究

范壮军1; 刘朗1; 李建刚2; 宋进仁1   

  1. 1. 中国科学院山西煤炭化学研究所, 太原 030001; 2。 中国科学院合肥等离子体物理研究所, 合肥 230031
  • 收稿日期:2002-10-14 修回日期:2002-11-26 出版日期:2003-11-20 网络出版日期:2003-11-20

Thermal Conductivity of Fine-grain Doped Graphite at Elevated Temperatures

FAN Zhuang-Jun1; LIU Lang1; LI Jian-Gang2; SONG Jin-Ren1   

  1. 1. Institute of Coal Chemistry; Chinese Academy of Sciences; Taiyuan 030001; China; 2.Institute of Plasma Physics; Hefei 230031; China
  • Received:2002-10-14 Revised:2002-11-26 Published:2003-11-20 Online:2003-11-20

摘要: 通过球磨分散方法制备了具有优良热机械性能的细颗粒掺杂石墨.该掺杂石墨材料具有致密的结构,细小的碳化物颗粒均匀分布在石墨基体中.研究表明;球磨分散方法制备的掺杂石墨比常规方法制备的石墨材料具有更优良的高温热性能以及抗热震性能.同时,本文对材料的性能与其微观结构进行关联.

关键词: 掺杂石墨, 微观结构, 热导率, 抗热震性能

Abstract: Fine-grain doped graphites, which possess excellent thermal-mechanical properties, were prepared by the ball-milling dispersion method. At the same time, the correlation between microstructure observed by SEM, EDX and XRD and the properties of the doped graphite was discussed. Such materials had dense and homogeneous structure with carbides dispersed uniformly in the carbon substrate, and showed an excellent thermal conductivity at elevated temperatures and thermal shock resistance.

Key words: doped graphite, microstructure, thermal conductivity, thermal shock resistance

中图分类号: