Publication: Effect of microwave sintering on the properties of copper oxide doped alumina toughened zirconia (ATZ)
Date
2023
Authors
Abbas M.K.G.
Ramesh S.
Tasfy S.F.H.
Lee K.Y.S.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Editora Ltda
Abstract
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)
Description
Keywords
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 , Alumina-zirconia , Composite ceramic , Densifications , Doped alumina , Hydrothermal ageing , Microwave sintering , Optimum doping , Property , Sintering additives , Sintering temperatures , Copper oxides