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Kinetic model and mechanism of Y3Al5O12 formation in hydrothermal and thermovaporous synthesisстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Ivakin Y.D., Danchevskaya M.N., Muravieva G.P.
- Журнал: High Pressure Research
- Том: 20
- Номер: 1-6
- Год издания: 2001
- Издательство: Taylor & Francis
- Местоположение издательства: United Kingdom
- Первая страница: 87
- Последняя страница: 98
- DOI: 10.1080/08957950108206156
- Аннотация: Kinetics and mechanism of fine-crystalline yttrium- aluminum garnet (YAG) formation under hydrothermal and thermovaporous treatment were investigated. It was synthesized from the stoichiometric mixture of oxides in the temperature range 200-400degreesC at pressures of water vapor 4.0 - 26 MPa. It was established that in quasi-equilibrium with water vapor conditions the synthesis of YAG proceeds with formation of intermediate substance with Y(OH)(3) structure and amorphous aluminous component. The diffusion of this aluminous component into the Y(OH)3 matrix resulted in the reorganization of oxygen sublattice accompanied with dehydroxylation. The kinetics of YAG formation is described by the equation of solid-phase transformation with the limiting stage of nucleation. Synthesized YAG contains 5 - 7% of water, which corresponds to a hydrogarnet structure. The study of luminescence properties of YAG doped with Nd3+ or Cr3+ ions has allowed to determine the positions of hydroxyl groups and oxygen vacancies in the structure.
- Добавил в систему: Муравьева Галина Петровна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Текст в формате pdf | Kinetic_model_and_mechanism_of_Y3Al5O12_formation.pdf | 547,9 КБ | 9 апреля 2015 [YuIvakin] |