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Effect of microwave sintering on the properties of copper oxide doped alumina toughened zirconia (ATZ)

This study investigated the effect of copper oxide addition on the alumina toughened zirconia composite ceramic using microwave sintering. CuO amounts (0.05�1 wt%) were examined at sintering temperatures (1250�1500 �C). Investigations covered hardness, toughness, phase stability, microstructure, and...

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Bibliographic Details
Main Authors: Abbas M.K.G., Ramesh S., Tasfy S.F.H., Lee K.Y.S.
Other Authors: 24476291800
Format: Article
Published: Elsevier Editora Ltda 2024
Subjects:
Alumina-zirconia
Copper oxide
Hydrothermal ageing
Mechanical properties
Microwave sintering
Sintering additive
Additives
Aluminum oxide
Ductile fracture
Fracture toughness
Microwave heating
Phase stability
Sintered alumina
Sintering
Temperature
Vickers hardness
Zirconia
Composite ceramic
Densifications
Doped alumina
Optimum doping
Property
Sintering additives
Sintering temperatures
Copper oxides
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Summary:This study investigated the effect of copper oxide addition on the alumina toughened zirconia composite ceramic using microwave sintering. CuO amounts (0.05�1 wt%) were examined at sintering temperatures (1250�1500 �C). Investigations covered hardness, toughness, phase stability, microstructure, and densification. Optimum doping was 0.2 wt%, resulting in a composite with 99% relative density at 1500 �C, Vickers hardness of 13.1 GPa, and fracture toughness of 7.1 MPa m1/2. Low-temperature degradation showed disrupted phase stability above 1400 �C, with CuO unable to prevent ageing-induced phase transformation. � 2023 The Author(s)

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