Structural stability studies of graphene in sintered ceramic nanocomposites

Article

Inam, F., Thuc, V. and Bhat, B. R. 2014. Structural stability studies of graphene in sintered ceramic nanocomposites. Ceramics International. 40 (10), pp. 16227-16233. https://doi.org/10.1016/j.ceramint.2014.07.058
AuthorsInam, F., Thuc, V. and Bhat, B. R.
Abstract

The post-sintering structural stability of graphene in alumina nanocomposites synthesised by Spark Plasma Sintering (SPS) and Hot Pressing (HP) was compared. Raman spectroscopy, thermogravimetric analyses and electrical conductivity analyses were conducted to characterise degradation of graphene due to the utilisation of different sintering techniques and conditions. Scanning Electron Microscopy confirmed good dispersion of graphene in SPSed and HPed sample. Graphene in SPSed and HPed nanocomposite samples sintered using longer durations (60 min) were found to possess higher crystallinity, thermal stability and electrical conductivity as compared to SPSed samples sintered using shorter sintering durations (10–20 min). This was attributed to the thermally induced graphitisation caused by longer sintering durations, which was lacking in SPSed samples processed using shorter sintering durations and lower temperature. No additional effect of DC pulsed current on the structural stability of graphene for nanocomposites were observed for samples prepared by SPS.

JournalCeramics International
Journal citation40 (10), pp. 16227-16233
ISSN0272-8842
Year2014
PublisherElsevier
Accepted author manuscript
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1016/j.ceramint.2014.07.058
Web address (URL)https://doi.org/10.1016/j.ceramint.2014.07.058
Publication dates
Online18 Jul 2014
Publication process dates
Deposited28 Apr 2020
Copyright holder© 2014 Elsevier
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