Исследование влияния вариации соотношения компонент в двухфазных керамиках на устойчивость к высокодозному облучению протонами, моделирующим эффекты водородного распухания
Авторы
DOI:
https://doi.org/10.31489/2025N1/5-18Ключевые слова:
водородное распухание, бридеры, двухфазная керамика, высокодозное облучение, литий метацирконат, литий ортоcиликатАннотация
В статье представлены результаты оценки процессов разрушения прочностных и тепловых параметров двухфазной литийсодержащей керамики, подвергшейся высокодозному облучению протонами, воздействие которых моделирует процессы водородного распухания. Интерес к данной теме исследования обусловлен, прежде всего, возможностью определения влияния изменения соотношения двух компонентов метацирконата лития и ортосиликата лития на поддержание стабильности и устойчивости к радиационным повреждениям, а также на диффузионные процессы, связанные с пострадиационным изотермическим отжигом образцов, характерные для моделирования процессов десорбции. В ходе проведенных исследований влияния изменения соотношения компонентов в двухфазной керамике на устойчивость к радиационно-индуцированным процессам размягчения и снижению трещиностойкости было установлено, что, в отличие от однофазной керамики, сочетание двух фаз в составе приводит не только к увеличению начальных прочностных параметров, но и к повышению устойчивости к размягчению за счет наличия межфазных границ. При испытаниях исследуемой керамики на тепловое воздействие (испытания на термостойкость) было выявлено, что в случае двухфазной керамики наблюдается повышение стабильности сохранения прочностных свойств при длительных температурных изменениях.
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