Electrical properties of nanoceramics reinforced with ropes of single-walled carbon nanotubes
Electrical properties of nanoceramics reinforced with ropes of single-walled carbon nanotubes
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DOI：
10.1063/1.1600511
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发表时间：
2003-08-11
影响因子：
4
通讯作者：
Mukherjee, AK
中科院分区：
文献类型：
--
作者：
Zhan, GD;Kuntz, JD;Mukherjee, AK
单壁碳纳米管（SWCNT）用于将绝缘纳米陶瓷转化为金属导电复合材料。通过放电等离子烧结技术制备了致密的 SWCNT/Al2O3 纳米复合材料，其 CNT 含量范围为 5.7 至 15 vol%，并具有纳米晶氧化铝基体，保留了基体中 SWCNT 的完整性。这些复合材料的电导率随着碳纳米管含量的增加而增加。 15 vol% SWCNT/Al2O3 纳米复合材料在室温下的电导率已增加至 3345 S/m。这比纯氧化铝增加了 13 个数量级，比之前报道的 CNT-陶瓷复合材料的结果增加了 735% 以上。 (C) 2003 年美国物理研究所。
Single-walled carbon nanotubes (SWCNTs) were used to convert insulating nanoceramics to metallically conductive composites. Dense SWCNT/Al2O3 nanocomposites with CNT contents ranging from 5.7 to 15 vol % and with nanocrystalline alumina matrices have been fabricated by spark-plasma-sintering that retains the integrity of SWCNT in the matrix. The conductivity of these composites increases with increasing content of CNTs. The conductivity has been increased to 3345 S/m in the 15 vol % SWCNT/Al2O3 nanocomposite at room temperature. This is an increase of 13 orders of magnitude over pure alumina and of more than 735% over previously reported results in CNT-ceramic composites. (C) 2003 American Institute of Physics.