Microstructure and thermal stability of carbon nanotubes dispersed alumina nanocomposites prepared by spark plasma sintering

Yong Ho Choa, Seung Hwa Yoo, Jae Kyo Yang, Chul Kyu Song, Sung Tag Oh, Se Joong Yoon, Sung Goon Kang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of relative density on the thermal stability of CNTs-dispersed Al2O3 nanocomposites has been investigated by using thermogravimetric analysis (TGA). TGA revealed that the onset temperature for weight loss increased with an increasing sintering temperature and CNT content. By taking account of the XRD and SEM results, it is suggested that the weight loss is caused by a decomposition of CNTs phase by oxidative atmosphere. The difference in thermal stability was explained by the porosity effect on the oxidation and decomposition behavior of CNTs, because the open pores promote the chemical reaction and gas flow of reactants.

Original languageEnglish
Title of host publicationNanocomposites and Nanoporous Materials
EditorsChang Kyu Rhee
PublisherTrans Tech Publications Ltd
Pages59-62
Number of pages4
ISBN (Print)9783908451273
DOIs
StatePublished - 2007
Event7th International Symposium on Nanocomposites and Nanoporous Materials, ISNAM 2006 - Gyeongju, Korea, Republic of
Duration: 15 Feb 200617 Feb 2006

Publication series

NameSolid State Phenomena
Volume119
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Conference

Conference7th International Symposium on Nanocomposites and Nanoporous Materials, ISNAM 2006
Country/TerritoryKorea, Republic of
CityGyeongju
Period15/02/0617/02/06

Keywords

  • Carbon nanotubes
  • Microstructure
  • Nanocomposites
  • Thermogravimetric analysis

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