journal article·2018-10-03

The toughening mechanism and mechanical properties of graphene-reinforced zirconia ceramics by microwave sintering

Hongrong Zou, Yaping Zhang, Liqi Liu, Lei Shi, Wenrong Li

Advances in Applied Ceramics· Volume 117· Issue 7
Publisher page

Abstract

The graphene/ZrO2 composites were fabricated by impregnating graphene dispersion into the ZrO2 ceramic matrix and sintered by microwave, and the microstructure and mechanical properties were investigated. The results showed that the graphene was well dispersed in the ceramic matrix and refined the grain size. The fracture toughness reached 8.62 MPa m1/2, confirmed by single-edge notched beam, which was 42% higher than that of the pure ZrO2. Also, the toughening mechanisms were investigated by micro-hardness testing and showed that a combination of crack deflection, micro-crack and crack bridging increased the fracture toughness.
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Research context

OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Research Center of Composite Materials, Shanghai University, Shanghai, People’s Republic of China

Institute of Sustainable Energy, Shanghai University, Shanghai, People’s Republic of China

Funding

the Foundation with Shanghai Chigong Ceramic Technology & Science Co., Ltd

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