Engineering properties of graphene - ceramic nanocomposites by incorporating defects in graphene

Inam, Fawad, Okolo, Chichi, Vo, Thuc and Iqbal, Sadia Sagar (2017) Engineering properties of graphene - ceramic nanocomposites by incorporating defects in graphene. In: WCSM-2017 - 3rd Annual World Congress of Smart Materials-2017, 16th - 18th March, 2017, Bangkok, Thailand.

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Abstract

A novel strategy for producing ceramic – graphene nanocomposites with customizable mechanical and electrical properties without changing the amount of graphene has been presented. Structural and crystalline defects were produced in graphene using high-power tip ultrasonication for 20, 40 and 60 minutes. Raman spectroscopy and thermogravimetric analyses were conducted to characterize degradation in graphene. Alumina – graphene nanocomposites were then prepared using Spark Plasma Sintering. Fracture toughness and electrical conductivities were measured for alumina nanocomposites containing 0.5 vol% and 3 vol% graphene respectively. Electrical conductivity and fracture toughness values of alumina – graphene nanocomposites decreased with the increase in structural defects in graphene. The quality of graphene has no influence on the grain size of the alumina nanocomposites.

Item Type: Conference or Workshop Item (Paper)
Subjects: F200 Materials Science
F300 Physics
J300 Ceramics and Glasses
J500 Materials Technology not otherwise specified
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Fawad Inam
Date Deposited: 23 Mar 2017 17:27
Last Modified: 10 May 2017 19:07
URI: http://nrl.northumbria.ac.uk/id/eprint/30180

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