Effects of plasma surface modification on interfacial behaviors and mechanical properties of carbon nanotube- Al2 O3 nanocomposites

Yan Guo, Hoonsung Cho, Donglu Shi, Jie Lian, Yi Song, Jandro Abot, Bed Poudel, Zhifeng Ren, Lumin Wang, Rodney C. Ewing

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Abstract

The effects of plasma surface modification on interfacial behaviors in carbon nanotube (CNT) reinforced alumina (Al2 O3) nanocomposites were studied. A unique plasma polymerization method was used to modify the surfaces of CNTs and Al2 O3 nanoparticles. The CNT- Al2 O3 nanocomposites were processed by both ambient pressure and hot-press sintering. The electron microscopy results showed ultrathin polymer coating on the surfaces of CNTs and Al2 O3 nanoparticles. A distinctive stress-strain curve difference related to the structural interfaces and plasma coating was observed from the nanocomposites. The mechanical performance and thermal stability of CNT- Al2 O3 nanocomposites were found to be significantly enhanced by the plasma-polymerized coating.

Original languageEnglish (US)
Article number261903
JournalApplied Physics Letters
Volume91
Issue number26
DOIs
Publication statusPublished - Dec 1 2007

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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