Microstructure and physicomechanical properties of pressureless sintered multiwalled carbon nanotube/alumina nanocomposites

Sarkar, Soumya
Das, Probal Kumar

Publication date

January 2012

Publisher

Elsevier BV

Abstract

Multiwalled carbon nanotube (MWCNT)/alumina (Al(2)O(3)) nanocomposites containing CNT from 0.15 vol.% to 2.4 vol.% have been successfully fabricated by simple wet mixing of as-received commercial precursors followed by pressureless sintering. Extent of densification of nanocomposites sintered at low temperature (e.g. 1500 degrees C) was <90%, but increased up to similar to 99% when sintered at 1700 degrees C and offered superior performance compared to pure Al(2)O(3). Nanocomposites containing 0.3 vol.% MWCNT and sintered at 1700 degrees C for 2 h in Argon led to similar to 23% and similar to 34% improvement in hardness and fracture toughness, respectively, than monolithic Al(2)O(3). In addition, the highest improvement (similar to 20%) in ...

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Microstructure and physicomechanical properties of pressureless sintered multiwalled carbon nanotube/alumina nanocomposites

Abstract

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Microstructure and physicomechanical properties of pressureless sintered multiwalled carbon nanotube/alumina nanocomposites

Abstract

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