Toughened and strengthened silicon carbide ceramics by adding graphene-based fillers

Manuel Belmonte; Andrés Nistal; Pierre Boutbien; Benito Román-Manso; María I. Osendi; Pilar Miranzo

doi:10.1016/j.scriptamat.2015.10.023

Toughened and strengthened silicon carbide ceramics by adding graphene-based fillers

Manuel Belmonte^*, Andrés Nistal, Pierre Boutbien, Benito Román-Manso, María I. Osendi, Pilar Miranzo

^*Corresponding author for this work

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

105 Citations (Scopus)

Abstract

Graphene nanoplatelets and reduced graphene oxide (rGO) were selected as fillers to develop reinforced silicon carbide (SiC)/graphene composites. The mechanical properties of the materials were investigated as a function of the type of graphene source and graphene content. Composites containing just 5 vol.% of rGOs exhibited an outstanding mechanical performance, increasing both the fracture toughness by ~ 162%, with a maximum value of 8.3 MPa · m^1/2, and the strength by ~ 60% (600 MPa) when compared to monolithic SiC. The preferential alignment of the graphene fillers, their dimensions, and the graphene-SiC mechanical interlock are key factors to promote crack shielding mechanisms.

Original language	English
Pages (from-to)	127-130
Number of pages	4
Journal	Scripta Materialia
Volume	113
Early online date	05 Nov 2015
DOIs	https://doi.org/10.1016/j.scriptamat.2015.10.023
Publication status	Published - 01 Mar 2016
Externally published	Yes

Keywords

Ceramic matrix composites (CMC)
Fracture
Graphene
Mechanical properties
Toughness

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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Cite this

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title = "Toughened and strengthened silicon carbide ceramics by adding graphene-based fillers",

abstract = "Graphene nanoplatelets and reduced graphene oxide (rGO) were selected as fillers to develop reinforced silicon carbide (SiC)/graphene composites. The mechanical properties of the materials were investigated as a function of the type of graphene source and graphene content. Composites containing just 5 vol.% of rGOs exhibited an outstanding mechanical performance, increasing both the fracture toughness by ~ 162%, with a maximum value of 8.3 MPa · m1/2, and the strength by ~ 60% (600 MPa) when compared to monolithic SiC. The preferential alignment of the graphene fillers, their dimensions, and the graphene-SiC mechanical interlock are key factors to promote crack shielding mechanisms.",

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AU - Belmonte, Manuel

AU - Nistal, Andrés

AU - Boutbien, Pierre

AU - Román-Manso, Benito

AU - Osendi, María I.

AU - Miranzo, Pilar

PY - 2016/3/1

Y1 - 2016/3/1

N2 - Graphene nanoplatelets and reduced graphene oxide (rGO) were selected as fillers to develop reinforced silicon carbide (SiC)/graphene composites. The mechanical properties of the materials were investigated as a function of the type of graphene source and graphene content. Composites containing just 5 vol.% of rGOs exhibited an outstanding mechanical performance, increasing both the fracture toughness by ~ 162%, with a maximum value of 8.3 MPa · m1/2, and the strength by ~ 60% (600 MPa) when compared to monolithic SiC. The preferential alignment of the graphene fillers, their dimensions, and the graphene-SiC mechanical interlock are key factors to promote crack shielding mechanisms.

AB - Graphene nanoplatelets and reduced graphene oxide (rGO) were selected as fillers to develop reinforced silicon carbide (SiC)/graphene composites. The mechanical properties of the materials were investigated as a function of the type of graphene source and graphene content. Composites containing just 5 vol.% of rGOs exhibited an outstanding mechanical performance, increasing both the fracture toughness by ~ 162%, with a maximum value of 8.3 MPa · m1/2, and the strength by ~ 60% (600 MPa) when compared to monolithic SiC. The preferential alignment of the graphene fillers, their dimensions, and the graphene-SiC mechanical interlock are key factors to promote crack shielding mechanisms.

KW - Ceramic matrix composites (CMC)

KW - Fracture

KW - Graphene

KW - Mechanical properties

KW - Toughness

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Toughened and strengthened silicon carbide ceramics by adding graphene-based fillers

Abstract

Keywords

ASJC Scopus subject areas

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