Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.1134/S0020168522060024
Ключевые слова: δ-phase of bismuth silicate, metastable equilibrium, metastable melt solidification, heat treatment of a melt
Аннотация: We have studied the effect of isothermal holding of a melt containing 78 mol % Bi2O3 and 22 mol % SiO2 and various melt cooling schedules on the morphology, microstructure, and phase composition of crystals of a metastable solid solution based on the high-temperature δ-polymorph of Bi2O3 (δ*-phase). The results demonstrate that higПоказать полностьюh-temperature holding is favorable for melt supercooling and crystallization of the δ*-phase in a wide range of cooling rates. We have investigated peritectoid decomposition of the δ*-phase at subsolidus temperatures. Its products are a silicon dioxide-deficient δ4-phase and crystalline polymorphs of metastable SiO2.
Журнал: Inorganic Materials
Выпуск журнала: Т.58, №6
Номера страниц: 604-611
ISSN журнала: 00201685
Место издания: Москва
Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)