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Abstract:
In this work, multilayer graphene (MLG) was incorporated into the WC-ZrO2 composite to enhance its comprehensive mechanical properties. The phase compositions of the mixed powder with varying MLG contents, together with the microstructures and mechanical properties of the sintered WC-ZrO2-MLG composites were studied in detail. Utilizing a novel powder dispersion method, a uniform distribution of MLG was achieved in the WC-ZrO2 mixed powder. The prepared WC-ZrO2 composite with an optimal amount of dispersed MLG exhibited concurrently increased hardness and fracture toughness. The significant enhancement of fracture toughness is primarily attributed to the deflection and branching of cracks in multiple directions upon encountering MLG, as well as the pull-out and bridging effects from MLG during crack propagation. This study provides a new strategy for toughening ceramic materials and enhancing their comprehensive properties.
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Source :
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
ISSN: 0263-4368
Year: 2025
Volume: 128
3 . 6 0 0
JCR@2022
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 9
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