ФАЗОВЫЕ ПРЕОБРАЗОВАНИЯ В ФЕРРИТАХ ПРИ РАДИАЦИОННО-ТЕРМИЧЕСКОМ СПЕКАНИИ.

Авторы

  • А.П. Суржиков
  • Е.Н. Лысенко
  • А.В. Малышев
  • А. Петрова
  • С.А. Гынгазов
  • А.К. Аймуханов

DOI:

https://doi.org/10.31489/2020No1/26-34

Ключевые слова:

литий-титановый феррит, порошок, спекание, электронные пучки, электронная микроскопия, морфология, фазовый состав, дефектность.

Аннотация

"Проведены электронно-микроскопические исследования фазового состава, морфологии и дефектной структуры литий-титановых ферритовых порошков и керамических образцов, спеченных в условиях радиационно-термического и теплового воздействий. Радиационно-термическое спекание образцов ферритов осуществляли путем облучения заготовки импульсным электронным пучком с энергией (1,5-2,0) МэВ с использованием электронного ускорителя. Ток пучка в импульсе составлял (0,5-0,9) А, длительность импульса облучения-500 мкс, частота следования импульсов - (5-50) Гц, скорость нагрева заготовки -1000 °С/мин. Образцы облучали в коробке из легкого шамотного материала с толщиной дна 15 мм. Исследования микроструктуры проводили методами электронно-дифракционной микроскопии на свету с использованием электронного микроскопа. Показано, что наиболее вероятной моделью радиационной интенсификации процесса спекания ферритов может служить механизм радиационного торможения дислокаций при нагреве, образующихся во время распада субзеренных границ в зернах промежуточных фаз феррита. "

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Как цитировать

Суржиков A., Лысенко E., Малышев A., Петрова A., Гынгазов S., & Аймуханов A. (2020). ФАЗОВЫЕ ПРЕОБРАЗОВАНИЯ В ФЕРРИТАХ ПРИ РАДИАЦИОННО-ТЕРМИЧЕСКОМ СПЕКАНИИ. Eurasian Physical Technical Journal, 17(1(33), 26–34. https://doi.org/10.31489/2020No1/26-34

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