Low-frequency internal friction of polycrystalline ZrO2-4 mol % Y2O3 in the temperature range 273–373 K |
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Authors: | G A Marinin G Ya Akimov V N Varyukhin O N Potapskaya |
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Institution: | (1) Donetsk Physicotechnical Institute, National Academy of Sciences of Ukraine, Donetsk, 83114, Ukraine |
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Abstract: | The specific features in the low-frequency internal friction, structure, and phase composition of polycrystalline ZrO2-4 mol % Y2O3 are investigated in the temperature range 273–373 K. It is demonstrated that the low-frequency internal friction exhibits two peaks upon heating and cooling. The former peak is observed at a temperature of approximately 293 K, and the latter peak is revealed at 313 K. It is assumed that the peak observed in the low-frequency internal friction at a temperature of 293 K is attributed to relaxation dissipation of energy during motion of twin boundaries in the monoclinic phase, whereas the peak at 313 K is associated with relaxation processes due to displacement of the boundaries of tetragonal T′ domains. |
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