Effect of Carbon Reduction on the Properties of 13 mol% Tio2─3 mol% Y2O3─84 mol% ZrO2 |
| |
Authors: | Krzysztof Haberko Waldemar Pyda Jan Piekarczyk Miroslaw M. Bucko |
| |
Affiliation: | Department of Special Ceramics, Academy of Mining and Metallurgy, Cracow, Poland |
| |
Abstract: | Fully tetragonal and sintered 13 mol% TiO2─3 mol% Y2O3─84 mol% ZrO2 was thermally treated at 1300°C for 1 h in argon in the presence of carbon. No phase changes occurred on the as-received surface and in the bulk of the material, but t → m transformation occurred on polished surfaces under reducing conditions, and it resulted in increased fracture toughness, Young's modulus, and modulus of rigidity. Deoxidation of the system occurred and 0.174 wt% of carbon was found in the sample. This seemed to stabilize the tetragonal phase. |
| |
Keywords: | zirconia yttria-stabilized tetragonal polycrystals titania heat treatment carbon argon |
|
|