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Design of a New Zirconia–Alumina–Ta Micro‐Nanocomposite with Unique Mechanical Properties

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2Y‐TZP/Al2O3 hybrid nanoparticles prepared by CO2 laser covaporization (CoLAVA) were wet mixed with biocompatible lamellar Ta metal particles (20 vol%) and consolidated by spark plasma sintering. The microstructure and mechanical properties of this novel ceramic–metal composite have been studied. The achieved results demonstrate that both the homogeneity of the 2Y‐TZP/Al2O3 nanocomposite matrix and the reinforcement with a micrometer‐sized ductile phase are prerequisites for the successful design and fabrication of ceramic–metal composites with high strength (1300 MPa), enhanced fracture toughness (16 MPa·m1/2), and improved low‐temperature degradation resistance.
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Keywords: ceramic matrix composites; ceramic–metal systems; mechanical properties; spark plasma sintering

Document Type: Research Article

Publication date: October 1, 2016

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