We report the effects of multiwalled carbon nanotube (MWCNT) dispersions (<= 15 wt.%) on the electrical and thermal conductivities of an aluminoborosilicate glass-ceramic. The electrical conductivity was improved by a factor of similar to 10(6) and the thermal conductivity by similar to 70%. The uniform MWCNT distribution achieved with up to 10 wt.% MWCNT resulted in a relatively high electrical percolation threshold. Thermal conductivity was limited by the low thermal conductivities of the CVD MWCNTs, length reduction during processing and interfacial resistance. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
机构:
Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China