Published January 1, 2015
| Version v1
Journal article
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Spark plasma sintering of Si3N4/multilayer graphene composites
Creators
- 1. Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Sci, H-1025 Budapest, Hungary
- 2. Hungarian Acad Sci, Res Ctr Nat Sci, Inst Tech Phys & Mat Sci, H-1121 Budapest, Hungary
Description
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(1/2) 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.
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