Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.1016/j.jallcom.2015.12.168
Ключевые слова: Plasma spraying, Spinel structure, Spinel ferrites, Catalysis, Ferrites, Plasma jets, Catalytic reactions, Ferrite compositions, Ferrite powders, Lattice points, Structural feature, Topological disorder, Ferrite
Аннотация: Structural features of spinel ferrites formed by rapid quenched from the liquid state, has been studied. It was found that higher quenching rates cause sequential disorder of the spinel structure. Process starts with statistically uniform redistribution of cations at lattice points, then collapse of the anionic frame leads to the tПоказать полностьюopological disorder. This process results in formation of the thermodynamically unstable cluster state and heating of these hardened ferrites leads to a stepwise release of energy. Therefore the described process improves activity of ferrite powders in solid-phase and catalytic reactions. (C) 2015 Elsevier B.V. All rights reserved.
Журнал: JOURNAL OF ALLOYS AND COMPOUNDS
Выпуск журнала: Vol. 663
Номера страниц: 631-635
ISSN журнала: 09258388
Место издания: LAUSANNE
Издатель: ELSEVIER SCIENCE SA