The influence of sintering technique on microstructure and properties of ZrO2/Al2O3 composite

Agnieszka Wojteczko, Kamil Wojteczko, Marta Strzelecka, Tatyana Nam, Katarzyna Jach, Marcin Rosiński, Mirosław M. Bućko, Zbigniew Pędzich

Quarterly No. 4, 2019 pages 157-160

DOI:

keywords: zirconia/alumina composite, sintering, U-FAST technique, microstructure, grain size

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abstract The following paper presents the results of investigations on the microstructure and mechanical properties of sintered composites in the zirconia-alumina system, fabricated by various sintering techniques. The investigations were performed for a particulate composite consisting of two continuous ceramic phases – zirconia (TZP) and alumina (α-Al₂O₃), 50 vol.% each. Two different methods were used to produce the samples: pressureless sintering and the U-FAST technique. The microstructure of the obtained sintered composite samples was evaluated using a scanning electron microscope. In addition, the density of the sintered bodies, their hardness and fracture toughness were investigated to evaluate the mechanical properties. Based on the obtained results of the investigations, the influence of the sintering technique on the microstructure and mechanical properties of the sintered composites was determined.