Autor: |
Cui, Jinping, Zhao, Wei, Guan, Kang, Rao, Pinggen |
Zdroj: |
Journal of the Australian Ceramic Society; December 2020, Vol. 56 Issue: 4 p1229-1235, 7p |
Abstrakt: |
Yttrium stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics containing 2 mol% and 2.5 mol% yttria were prepared by mixing 3 mol% yttria-doped zirconia powders with yttria-free zirconia powders. The microstructures of the sintered samples were studied using SEM, XRD, and Raman spectra. In addition, an ultra-sharp V-notch (??0.5 µm) was induced by femtosecond laser to measure its actual fracture toughness by single-edge V-notched beam (SEVNB) method. The results reveal that mixture-based Y-TZP with 2.5 mol% yttria has deeper phase transformation depth, and fracture toughness of 6.4 MPa.m1/2is obtained. The heterogeneous distribution of the yttrium is taken account for the excellent properties. |
Databáze: |
Supplemental Index |
Externí odkaz: |
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