Mechanical properties of graphene platelet-reinforced alumina ceramic composites

Jian Liu; Haixue Yan; Kyle Jiang

doi:10.1016/j.ceramint.2013.01.041

Mechanical properties of graphene platelet-reinforced alumina ceramic composites

Jian Liu, Haixue Yan, Kyle Jiang^*

^*Corresponding author for this work

Mechanical Engineering

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

242 Citations (Scopus)

Abstract

Alumina (Al₂O₃) ceramic composites reinforced with graphene platelets (GPLs) were prepared using Spark Plasma Sintering. The effects of GPLs on the microstructure and mechanical properties of the Al ₂O₃ based ceramic composites were investigated. The results show that GPLs are well dispersed in the ceramic matrix. However, overlapping of GPLs and porosity within ceramics are observed. The flexural strength and fracture toughness of the GPL-reinforced Al₂O ₃ ceramic composites are significantly higher than that of monolithic Al₂O₃ samples. A 30.75% increase in flexural strength and a 27.20% increase in fracture toughness for the Al₂O ₃ceramic composites have been achieved by adding GPLs. The toughening mechanisms, such as pull-out and crack deflection induced by GPLs are observed and discussed.

Original language	English
Pages (from-to)	6215-6221
Number of pages	7
Journal	Ceramics International
Volume	39
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2013.01.041
Publication status	Published - 1 Aug 2013

Keywords

A. Sintering
B. Composites
C. Mechanical properties
C. Toughness and toughening

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2013.01.041

Cite this

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title = "Mechanical properties of graphene platelet-reinforced alumina ceramic composites",

abstract = "Alumina (Al2O3) ceramic composites reinforced with graphene platelets (GPLs) were prepared using Spark Plasma Sintering. The effects of GPLs on the microstructure and mechanical properties of the Al 2O3 based ceramic composites were investigated. The results show that GPLs are well dispersed in the ceramic matrix. However, overlapping of GPLs and porosity within ceramics are observed. The flexural strength and fracture toughness of the GPL-reinforced Al2O 3 ceramic composites are significantly higher than that of monolithic Al2O3 samples. A 30.75% increase in flexural strength and a 27.20% increase in fracture toughness for the Al2O 3ceramic composites have been achieved by adding GPLs. The toughening mechanisms, such as pull-out and crack deflection induced by GPLs are observed and discussed.",

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author = "Jian Liu and Haixue Yan and Kyle Jiang",

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journal = "Ceramics International",

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T1 - Mechanical properties of graphene platelet-reinforced alumina ceramic composites

AU - Liu, Jian

AU - Yan, Haixue

AU - Jiang, Kyle

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N2 - Alumina (Al2O3) ceramic composites reinforced with graphene platelets (GPLs) were prepared using Spark Plasma Sintering. The effects of GPLs on the microstructure and mechanical properties of the Al 2O3 based ceramic composites were investigated. The results show that GPLs are well dispersed in the ceramic matrix. However, overlapping of GPLs and porosity within ceramics are observed. The flexural strength and fracture toughness of the GPL-reinforced Al2O 3 ceramic composites are significantly higher than that of monolithic Al2O3 samples. A 30.75% increase in flexural strength and a 27.20% increase in fracture toughness for the Al2O 3ceramic composites have been achieved by adding GPLs. The toughening mechanisms, such as pull-out and crack deflection induced by GPLs are observed and discussed.

AB - Alumina (Al2O3) ceramic composites reinforced with graphene platelets (GPLs) were prepared using Spark Plasma Sintering. The effects of GPLs on the microstructure and mechanical properties of the Al 2O3 based ceramic composites were investigated. The results show that GPLs are well dispersed in the ceramic matrix. However, overlapping of GPLs and porosity within ceramics are observed. The flexural strength and fracture toughness of the GPL-reinforced Al2O 3 ceramic composites are significantly higher than that of monolithic Al2O3 samples. A 30.75% increase in flexural strength and a 27.20% increase in fracture toughness for the Al2O 3ceramic composites have been achieved by adding GPLs. The toughening mechanisms, such as pull-out and crack deflection induced by GPLs are observed and discussed.

KW - A. Sintering

KW - B. Composites

KW - C. Mechanical properties

KW - C. Toughness and toughening

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DO - 10.1016/j.ceramint.2013.01.041

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JO - Ceramics International

JF - Ceramics International

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Mechanical properties of graphene platelet-reinforced alumina ceramic composites

Abstract

Keywords

ASJC Scopus subject areas

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