Spark-plasma-sintering of double-walled carbon nanotube–magnesia nanocomposites

A double-walled carbon nanotube–MgO powder is prepared without any mixing. The applied pressure is the main parameter acting on densification. Increasing the maximum temperature and holding time is marginally beneficial. The nanotubes are blocking the matrix grain growth. The nanocomposite prepared...

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Bibliographic Details
Published inScripta materialia Vol. 60; no. 9; pp. 741 - 744
Main Authors Legorreta Garcia, F., Estournès, C., Peigney, A., Weibel, A., Flahaut, E., Laurent, Ch
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.05.2009
Elsevier
Subjects
Bonding
Carbon
Carbon nanotubes
Chemical Sciences
Densification
Magnesia
Material chemistry
Nanocomposite
Nanocomposites
Nanomaterials
Nanostructure
Nanotubes
Resistivity
Spark plasma sintering
Carbon nanotubes
Spark plasma sintering
Nanocomposite
Magnesia
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Summary:A double-walled carbon nanotube–MgO powder is prepared without any mixing. The applied pressure is the main parameter acting on densification. Increasing the maximum temperature and holding time is marginally beneficial. The nanotubes are blocking the matrix grain growth. The nanocomposite prepared using the most severe spark plasma sintering conditions (1700 °C, 150 MPa) shows mostly undamaged nanotubes and a higher microhardness than the other materials, reflecting a better bonding between nanotubes and matrix. The electrical conductivity of all nanocomposites is over 12 S/cm.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2008.12.053