Conductivity of the Nanostructured Ceramic Material Zr0.88Sc0.1Ce0.01Y0.01O1.955 Prepared from Mechanically Activated Powders
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Inorganic Materials
ISSN: 0020-1685
, E-ISSN: 1608-3172
|
| Вых. Данные |
Год: 2009,
Том: 45,
Номер: 1,
Страницы: 90-98
Страниц
: 9
DOI:
10.1134/S0020168509010142
|
| Авторы |
Zyryanov V.V.
1
,
Uvarov N.F.
1
,
Ulikhin A.S.
1
,
Kostrovskii V.G.
1
,
Bokhonov B.B.
1
,
Ivanov V.P.
2
,
Sadykov V.A.
2
,
Titov A.T.
3
,
Paichadze K.S.
1
|
| Организации |
| 1 |
Институт химии твердого тела и механохимии СО РАН
|
| 2 |
Институт катализа им. Г.К. Борескова СО РАН
|
| 3 |
Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН
|
|
Информация о финансировании (2)
|
1
|
Президиум СО РАН
|
95
|
|
2
|
Российский фонд фундаментальных исследований
|
06-03-32131
|
The structure of the Zr0.88 Sc0.1Ce0.01Y0.01O1.955 solid solution, a candidate for the use as a solid electrolyte in fuel cells with a low temperature, has been investigated using x-ray powder diffraction and Raman spectroscopy. Single-phase ceramic materials have been produced from powders prepared by the mechanochemical synthesis from ZrO2 nanoprecursors purified of the impurities introduced during grinding of commercial zirconia. The solid solution has a rhombohedral structure at room temperature owing to the partial ordering of oxygen vacancies. The electrical conductivity of the ceramic materials sintered at temperatures below 1570 K exhibits a hysteresis due to the delay of the martensitic transition from the cubic phase to the rhombohedral phase upon cooling of the sample. The nanostructured ceramic materials are characterized by a high mechanical strength and unusually close values of the activation energies for bulk and grain-boundary electrical conduction.