Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/8910
Title: Microstructures and mechanical properties of graphene platelets-reinforced spark plasma sintered tantalum diboride-silicon carbide composites
Authors: Gürcan, Kübra
İnci, Ezgi
Saçkan, İbrahim
Ayaş, Erhan
Gasan, Hakan
Keywords: UHTC
Graphene
Microfluidization
SPS
Issue Date: 2019
Publisher: IOP Publishing
Abstract: Graphene nanoplates reinforcement (GNPs) TaB2-SiC composites were fabricated with Spark Plazma sintering (SPS) at 1850 degrees C with a-uniaxial pressure of 50 MPa and 10 min dwell time. Systematic investigation on the effect of GNP amount of densification, microstructural and mechanical properties (microhardness and fracture toughness) of the composites were presented. Density and hardness of composites decreased with the addition of GNP, while similar to 35% increase of fracture toughness value was obtained with GNP addition. The microstructural evaluation indicated that overlapped and agglomerated GNPs increased with an increasing amount of GNP in the composites and caused to decrease of density and hardness. On the other hand, GNP was retained in the composite form even with high process temperature (1850 degrees C) and cause toughening of composites with changing the fracture mode from transgranular to transgranular/intergranular fracture. GNP pull out, crack branching, crack bridging and crack deflection were observed as main toughening mechanisms.
URI: https://doi.org/10.1088/2053-1591/ab4f3a
https://hdl.handle.net/11147/8910
ISSN: 2053-1591
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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