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Influence of elastic properties on superplasticity in doped yttria-stabilized zirconia |
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| Authors: | Yuriy Natanzon |
| Institution: | a Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland b Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warsaw, Poland c Department of Environment, Energy and Mobility, EMPA, 8600 Dübendorf, Switzerland |
| Abstract: | We report the first principles calculations of elastic and electronic properties of yttria-stabilized tetragonal zirconium dioxide (YZP) doped with GeO2, TiO2 and SiO2. Electronic structure and isotropic elastic properties of YZP do not change upon addition of dopants. Addition of dopants affects the shear C66 elastic constant that decreases with the increasing dopant concentration. A simple model that connects elastic softening to enhancement of superplasticity in doped fine-grained zirconia ceramics is proposed. |
| Keywords: | A Oxides C Ab initio calculations D Elastic properties D Electronic structure |
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