细粒级掺杂石墨材料的制备及其出气特性的研究
Preparation of a fine-grained doped graphite matrial and its out-gassing property

范壮军 ¹ 翟更太 ¹ 陈俊凌 ² 李建刚 ² 宋进仁 ¹ 刘朗 ¹

文摘	通过球磨分散方法制备了细粒级掺杂石墨，采用SEM、EDX、TEM、XRD等手段分析了材料微观结构，并对其性能作了初步研究。研究表明：当原始粉粒径小于100 nm时，材料具有高的热导率和优良的物理机械性能（抗变强度为116MPa），与粗晶石墨材料相比，结晶石墨材料在电子束辐照前的出气性能与其基本相同。而辐照之后，细晶石墨材料释放的H_2、H_2O、CO，特别是CO_2的量远远少于粗晶石墨材料的释放的量。
其他语种文摘	A ball-milling dispersion method has been developed for the preparation of multi-element doped graphite with starting mixture powders below 100 nm. Such doped graphite has high thermal conductivity and excellent mechanical properties (116MPa). The out-gassing behavior of doped graphite BM (with ball-milling) and CM (without ball-milling) showed that there was no difference before electron beam irradiation. However, the emission of H_2, H_2O, CO, especially CO_2 of BM was much less than that of CM. A fine-grained microstructure of BM was observed by SEM. The particle size, distribution and phase composition were investigated with EDX, TEM and XRD, Correlations between microstructure and properties of such doped graphite are discussed.
来源	新型炭材料（中英文） ,2002,17(2):51-55 【核心库】
关键词	球磨分散 ; 细晶掺杂石墨 ; 微观结构 ; 出气性能
地址	1. 中国科学院山西煤炭化学研究所, 山西, 太原, 030001 2. 中国科学院等离子体物理研究所, 安徽, 合肥, 230031
语种	中文
ISSN	1007-8827
学科	化学工业
基金	国家重大科学工程项目
文献收藏号	CSCD:1149330