Electro-Mechanical and Thermal Properties of Multiwalled Carbon Nanotube Reinforced Alumina Composites
Multi-walled carbon nanotube (MWNT) reinforced alumina composites with different MWNT contents (5 and 10 vol %) were fabricated by spark plasma sintering.The room temperature dc electrical conductivity,thermal conductivity,and mechanical properties were investigated.Results showed that the electrical conductivity has improved around twelve orders of magnitude by addition of 5 vol% of MWNT.The fracture toughness changed from 3.2 to 4.4 MPa m1/2 with 39% improvement over monolithic Al2O3.The thermal conductivity decreased with increase of MWNT contents.The low values of thermal conductivity suggest that interfacial thermal barrier play an important role in determining these properties.MWNT can be used to improve concurrently electrical,mechanical properties of Al2O3 but with lower values of thermal properties.
Nanocomposites Electrical conductivity Mechanical properties Thermal conductivity
Kaleem Ahmad Wei Pan Chunlei Wan
State Key Lab of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,Peoples Republic of China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
701-703
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）