Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Electrical properties of ZrO₂ in nano- and polycrystalline states at high pressure
Репозиторій DSpace/Manakin
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Electrical properties of ZrO₂ in nano- and polycrystalline states at high pressure
Інший ID:
PACS: 71.30.+h, 72.20.−i, 73.63.Bd
Посилання:
Electrical properties of ZrO₂ in nano- and polycrystalline states at high pressure / I.V. Korionov, A.N. Trefilova, A.N. Babushkin, I.G. Korionova, U.N. Shumina, W. Lojkowski, A. Opalinska // Физика и техника высоких давлений. — 2007. — Т. 17, № 1. — С. 70-73. — Бібліогр.: 3 назв. — англ.
Підтримка:
The research was made possible in part by grants RBRF No.01-03-96494 and CRDF No. REC-005.
Дата:
2007
Переглядів:
935
Завантажень:
463
Анотація:
We present the results of the research work devoted to the problem: how the crystallites influence the electrical properties of stabilized zirconia at pressures of 22−50 GPa and in the temperature range of 77−450 K. The measurements were conducted in the highpressure chamber under direct current on nanocrystalline powders of ZrO₂ stabilized by Pr (0.5%) and on compact powder samples of «partially stabilized» ZrO₂ including 5% Y₃P₃. The nanocrystallite size equals 10, 12 and 56 nm. The change of electronic properties of stabilized zirconia at 31.5–37.5 GPa, 40–44 GPa and 45.5–48.5 GPa in nano- and polycrystalline states has been discovered. It gives us a possibility to verify the phase diagram of ZrO₂ at those intervals of pressure. Besides, it has been revealed that stabilization as nanocrystallinity leads to appearance of additional mechanisms of conductivity in ZrO₂.
