Effect of grain size and amount of zirconia on the physical and mechanical properties and the wear resistance of zirconia-toughened alumina
| Autor: | O. Yu. Zadorozhnaya, T. A. Khabas, S.E. Malykhin, O. V. Tiunova |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Zirconia Toughened Alumina Abrasion (mechanical) Process Chemistry and Technology 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Grain size Surfaces Coatings and Films Electronic Optical and Magnetic Materials visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Grain boundary Cubic zirconia Ceramic Composite material 0210 nano-technology Yttria-stabilized zirconia |
| Zdroj: | Ceramics International. 46:9263-9270 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.12.180 |
| Popis: | The effects of the ZrO2 content and the particle size of ZrO2 powders on the microstructure, phase composition, physical and mechanical properties, and the abrasion wear resistance of advanced Al2O3 ceramics and zirconia-toughened alumina (ZTA) composites containing 0 to 30 mass% yttria-stabilised zirconia (YSZ) were investigated. The composite with a ZTA content of 30 mass% of ZrO2 exhibited the greatest resistance to abrasion wear. α-Al2O3 reflex broadening (hkl = 113) as a result of the microstresses in the Al2O3 crystal lattice during sandblasting decreased with increasing ZrO2 amount, where the ZrO2 particles located along the grain boundaries of Al2O3, hindering their growth and deformation. The use of nanodispersed ZrO2 powder produced by the plasma chemical technique led to a 1.5-fold increase in wear resistance in the resultant ZTA ceramic. |
| Databáze: | OpenAIRE |
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