Toughened and strengthened silicon carbide ceramics by adding graphene-based fillers. (1st March 2016)

• Record Type: Journal Article
• Authors: Belmonte, Manuel; Nistal, Andrés; Boutbien, Pierre; Román-Manso, Benito; Osendi, María I.; Miranzo, Pilar
• Is Part Of: Scripta materialia. Volume 113(2016)
• Page Start: 127
• Page End: 130
• Publication Date: 2016-03-01
• Subjects: Graphene -- Ceramic matrix composites (CMC) -- Mechanical properties -- Toughness -- Fracture; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.10.023
• Languages: English
• ISSNs: 1359-6462

Abstract

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. Graphical abstract: