Fabrication and Properties of AIN/CNT Composite Ceramics

摘要：

　　High thermal conductivity and dense AIN/CNT composite ceramics with additive Y2O3 were fabricated by spark plasma sintered (SPS) in this paper.The results indicated that CNT blocked the densification process in a certain extent,but in the sintering temperature of 1700℃,the relative density of composite ceramics were more than 97% with 1-10% volume fractions of CNT.The content of additive Y2O3 affected the thermal conductivity of AIN/CNT obviously.The thermal conductivity of composite material linearly decreased when the content of CNT increased and the tubular structure of CNT had been destructed during once sintering.The effects of the CNT structural damage to the thermal conductivity of composite ceramics were improved by adjusting the sintering process.The thermal conductivity of the composite ceramics with 3% volume fractions of CNT sintering in 1550℃/3min×3 was up to 145W/m·K,which higher than the single-phase AIN ceramics.

关键词： aluminum nitride carbon nanotube SPS thermal conductivity

作者: Hailong Liang Yongli Li Jie Tang Hailin Liu Yanli Huo Yufeng Chen

作者单位: China Building Materials Academy,Beijing 100024,China School of Materials Science & Engineering,Beijing University of Technology,Beijing 100124,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 898-901

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）