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Effect of lanthanum doping on water content and diffusion properties of corundum for producing transparent ceramicsстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
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: 6 февраля 2020 г.
- Авторы: Kreisberg V.A., Ivakin Yu D., Danchevskaya M.N.
- Журнал: Journal of the European Ceramic Society
- Том: 40
- Номер: 4
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 1651
- Последняя страница: 1657
- DOI: 10.1016/j.jeurceramsoc.2019.11.050
- Аннотация: The effect of doping corundum with lanthanum on the content of water and other gas impurities, on the diffusion characteristics, on the unit cell size and static strength of fine-crystalline corundum synthesized under thermovapours conditions in a supercritical water fluid was studied. Content, release and diffusion coefficients of water and other volatile impurities in corundum were measured by kinetic thermodesorption mass spectrometry. Water is the main volatile impurity in fine-crystalline corundum. It was found that the introduction of lanthanum into the structure of corundum reduces several times the content of water and other gas-liquid impurities. An increase in the diffusion coefficient of water during the doping of corundum with lanthanum leads to an increase in the degassing rate of fine-crystalline raw materials. When doping corundum, lanthanum, being localized in structural defects, not only displaces structural hydroxyl groups with the formation of strong aluminate-like bonds, but also decreases in the unit cell and increases in the average static strength of the crystals. La-doped corundum, due to the reduced content of water and other gas impurities, is a promising raw material for the production of transparent ceramics.
- Добавил в систему: Данчевская Марина Николаевна
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