Spark plasma sintering of Si3N4/multilayer graphene composites

Mulitlayer graphene reinforced silicon nitride composites were prepared by spark plasma sintering to investigate the effect of the graphene addition on mechanical properties. The composites contained multilayer graphene (MLG) in various (0, 1, 3 and 5 wt%) content. Significantly higher fracture toug...

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Bibliographic Details
Published in:Open Chemistry 2015-01, Vol.13 (1)
Main Authors: Bódis, Eszter, Tapasztó, Orsolya, Károly, Zoltán, Fazekas, Péter, Klébert, Szilvia, Keszler, Anna Mária, Balázsi, Katalin, Szépvölgyi, János
Format: Article
Language:English
Subjects:
multilayer graphene
silicon nitride
spark plasma sintering
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Summary:Mulitlayer graphene reinforced silicon nitride composites were prepared by spark plasma sintering to investigate the effect of the graphene addition on mechanical properties. The composites contained multilayer graphene (MLG) in various (0, 1, 3 and 5 wt%) content. Significantly higher fracture toughness of 8.0 MPa m was obtained at 1% MLG content, however, on further increasing the graphene content the toughness did not increase, but dropped to the value of the monolithic silicon nitride. The maximum hardness of 18.8 MPa was also obtained at 1% MLG, while at higher MLG contents it gradually decreased.
ISSN:2391-5420
DOI:10.1515/chem-2015-0064