Microstructure and luminescence properties of the high pressure high temperature sintered AlN–TiN ceramics

Kudyakova, V.S.; Leonidov, I.I.; Chaikin, D.V.; Shishkin, R.A.; Zamyatin, D.A.; Weinstein, I.A.

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: 17 августа 2021 г.

Авторы: Kudyakova Valeriya S., Leonidov Ivan I., Chaikin Dmitry V., Shishkin Roman A., Zamyatin Dmitry A., Weinstein Ilya A.
Журнал: Ceramics International
Том: 47
Номер: 12
Год издания: 2021
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 16876
Последняя страница: 16881
DOI: 10.1016/j.ceramint.2021.02.263
Аннотация: Composite ceramics of titanium nitride grains incorporated in an aluminium nitride matrix have been synthesized by high pressure high temperature treatment of a mechanical mixture of AlN–TiN (3 mol % TiN) powders. The microstructure of the samples analysed by means of electron beam microanalysis and Raman spectroscopy shows that the formation of cubic AlN in the composite begins near titanium nitride grains. The areas of mixed chemical composition, which can be assigned to the formation of the solid solutions Al1−xTixN, have been observed at the phase interfaces. The luminescence properties of AlN–TiN ceramics have been considered focusing on the choice of high pressure and high temperature treatment conditions. Three main components at 2.0 eV, 2.4 eV and 3.1 eV are revealed in the cathodoluminescence spectra analysed quantitatively. The observed emission originates from the radiative transitions with participation of valence band states, oxygen-vacancy centres (VAl–ON), nitrogen vacancies VN, and shallow donors which form a complex system of energy levels in the bandgap of the wurtzite-type AlN.
Добавил в систему: Леонидов Иван Ильич

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Microstructure and luminescence properties of the high pressure high temperature sintered AlN–TiN ceramicsстатья Исследовательская статья

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