Journal
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Volume 26, Issue 12, Pages 6107-6116Publisher
SPRINGER
DOI: 10.1007/s11665-017-2851-z
Keywords
ceramics matrix; composites; electron; microscopy; sintering; wear; x-ray
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Four different zirconia-toughened alumina added with different pairs of oxides (CeO2, TiO2, CuO, ZnO and SnO2) were prepared through the co-precipitation technique. Conventional sintering resulted in relative densities 96%. Phase analyses of these composites were performed by x-ray diffraction. Vicker's hardness and tribological behavior of all ZTA composites were studied. Microstructure analysis of polished and worn surfaces was carried out to understand and correlate the mechanical/tribological behavior with the microstructure. A different wear mechanism is observed in ZTA containing CeO2 and TiO2 which resulted in considerable improvement in tribological behavior with a minimum specific wear rate of 9 x 10(-7) mm(3)/Nm.
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