Field assisted sintering of graphene reinforced zirconia ceramics
Source abstract
Abstract
Abstract Three mol. % yttria stabilized zirconia (3Y-TZP) with Graphene platelets (GNPs) powder mixture was produced by ball milling using dimethyl formamide (DMF) as dispersion media. The GNPs-reinforced 3Y-TZP composites were densified (~99%) by field assisted sintering technology (FAST). A homogeneous dispersion of GNPs in 3Y-TZP is observed from the sintered samples, and the GNPs are bent and embedded between the grains, which results in increasing the contact area. The trans-granular mechanism of crack propagation becomes increasingly dominant by adding GNPs. The fracture toughness reaches 15.3 MPa·m 1/2 , as tested by single-edge notched beam method, which reflects an increase of 61% compared to GNPs-free 3Y-TZP. On the other hand, with higher GNPs content, the improvement in fracture toughness is limited. Toughening mechanisms, as determined through micro-hardness testing, including pull out, crack deflection, crack bridging, and micro-cracks, are observed and discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Graphene research and applications · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
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