The effect of graphene nanoplatelets on the thermal and electrical properties of aluminum nitride ceramics

Irem Nur Gamze Simsek; Andrés Nistal; Eugenio García; Domingo Pérez-Coll; Pilar Miranzo; María Isabel Osendi

doi:10.1016/j.jeurceramsoc.2016.12.044

The effect of graphene nanoplatelets on the thermal and electrical properties of aluminum nitride ceramics

Irem Nur Gamze Simsek, Andrés Nistal, Eugenio García, Domingo Pérez-Coll, Pilar Miranzo, María Isabel Osendi^*

^*Corresponding author for this work

School of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

The thermal conductivity (κ) of AlN (2.9wt.% of Y₂O₃) is studied as a function of the addition of multilayer graphene (from 0 to 10 vol.%). The κ values of these composites, fabricated by spark plasma sintering (SPS), are independently analyzed for the two characteristic directions defined by the GNPs orientation within the ceramic matrix; that is to say, perpendicular and parallel to the SPS pressing axis. Conversely to other ceramic/graphene systems, AlN composites experience a reduction of κ with the graphene addition for both orientations; actually the decrease of κ for the in-plane graphene orientation results rather unusual. This behavior is conveniently reproduced when an interface thermal resistance is introduced in effective media thermal conductivity models. Also remarkable is the change in the electrical properties of AlN becoming an electrical conductor (200Sm^-1) for graphene contents above 5 vol.%.

Original language	English
Pages (from-to)	3721-3729
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	37
Early online date	31 Dec 2016
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2016.12.044
Publication status	Published - Sep 2017

Keywords

Aluminum nitride (AlN)
Composites
Electrical conductivity
Graphene
Interface thermal resistence
Thermal conductivity

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "The effect of graphene nanoplatelets on the thermal and electrical properties of aluminum nitride ceramics",

abstract = "The thermal conductivity (κ) of AlN (2.9wt.% of Y2O3) is studied as a function of the addition of multilayer graphene (from 0 to 10 vol.%). The κ values of these composites, fabricated by spark plasma sintering (SPS), are independently analyzed for the two characteristic directions defined by the GNPs orientation within the ceramic matrix; that is to say, perpendicular and parallel to the SPS pressing axis. Conversely to other ceramic/graphene systems, AlN composites experience a reduction of κ with the graphene addition for both orientations; actually the decrease of κ for the in-plane graphene orientation results rather unusual. This behavior is conveniently reproduced when an interface thermal resistance is introduced in effective media thermal conductivity models. Also remarkable is the change in the electrical properties of AlN becoming an electrical conductor (200Sm-1) for graphene contents above 5 vol.%.",

keywords = "Aluminum nitride (AlN), Composites, Electrical conductivity, Graphene, Interface thermal resistence, Thermal conductivity",

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AU - Simsek, Irem Nur Gamze

AU - Nistal, Andrés

AU - García, Eugenio

AU - Pérez-Coll, Domingo

AU - Miranzo, Pilar

AU - Osendi, María Isabel

PY - 2017/9

Y1 - 2017/9

N2 - The thermal conductivity (κ) of AlN (2.9wt.% of Y2O3) is studied as a function of the addition of multilayer graphene (from 0 to 10 vol.%). The κ values of these composites, fabricated by spark plasma sintering (SPS), are independently analyzed for the two characteristic directions defined by the GNPs orientation within the ceramic matrix; that is to say, perpendicular and parallel to the SPS pressing axis. Conversely to other ceramic/graphene systems, AlN composites experience a reduction of κ with the graphene addition for both orientations; actually the decrease of κ for the in-plane graphene orientation results rather unusual. This behavior is conveniently reproduced when an interface thermal resistance is introduced in effective media thermal conductivity models. Also remarkable is the change in the electrical properties of AlN becoming an electrical conductor (200Sm-1) for graphene contents above 5 vol.%.

AB - The thermal conductivity (κ) of AlN (2.9wt.% of Y2O3) is studied as a function of the addition of multilayer graphene (from 0 to 10 vol.%). The κ values of these composites, fabricated by spark plasma sintering (SPS), are independently analyzed for the two characteristic directions defined by the GNPs orientation within the ceramic matrix; that is to say, perpendicular and parallel to the SPS pressing axis. Conversely to other ceramic/graphene systems, AlN composites experience a reduction of κ with the graphene addition for both orientations; actually the decrease of κ for the in-plane graphene orientation results rather unusual. This behavior is conveniently reproduced when an interface thermal resistance is introduced in effective media thermal conductivity models. Also remarkable is the change in the electrical properties of AlN becoming an electrical conductor (200Sm-1) for graphene contents above 5 vol.%.

KW - Aluminum nitride (AlN)

KW - Composites

KW - Electrical conductivity

KW - Graphene

KW - Interface thermal resistence

KW - Thermal conductivity

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JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

ER -

The effect of graphene nanoplatelets on the thermal and electrical properties of aluminum nitride ceramics

Abstract

Keywords

ASJC Scopus subject areas

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