Funct. Mater. 2014; 21 (4): 403-408.
Effect of zirconia stabilized by ittria additions on the structure and mechanical properties of alumina based ceramics
[1] Koszalin University of Technology, Koszalin, Poland
[2] National Science Centre "Kharkiv Institute of Physics and Technology", 1 Akademicheskaya Str., 61108 Kharkiv, Ukraine
The ceramic samples of pure alumina and alumina with additions of 10, 15, 20 wt. % ZrO2 stabilized by 5.3 % wt. Y2O3 were produced by slip casting method with the subsequent sintering. The enhancement of ceramic mechanical parameters such as Vickers hardness, bending strength, fracture toughness, thermal resistance, wear resistance due to additions of ZrO2 (5.3 % Y2O3) was observed. The effect of additions of ZrO2 on the formation of dense, tough and fine-grained structure of alumina ceramics was determined. The best complex of mechanical parameters was obtained on the alumina samples with 15 wt. % ZrO2
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