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Исследование прочностных характеристик алюмоциркониевой керамики при введении импрегнированного оксидным нанопорошком нитевидного порообразователя

Исследование прочностных характеристик алюмоциркониевой керамики при введении импрегнированного оксидным нанопорошком нитевидного порообразователя

Abstract

В работе рассмотрен вопрос о спекании оксидных порошковых композиций при формировании тонкопористого керамического материала. Исходная смесь состояла из порошков оксида алюминия и частично стабилизированного диоксида циркония микронных размеров. Канальная пористость создавалась введением выгорающих текстильных волокон, импрегнированных суспензией нанопорошков одноименных оксидов. Методом электронной микроскопии изучена морфология нанопорошков и спеченных образцов керамики, дифференциальным термическим анализом проанализировано поведение порообразователя при нагревании. При проведении исследований обнаружено влияние вида порообразующей добавки на прочность и пористость спеченной керамики. Полученные результаты свидетельствуют о том, что операция предварительного импрегнирования волокна позволяет повысить прочность пористого керамического материала. Спеченная алюмоциркониевая керамика представляет собой пористый упрочненный материал с ячеистой плотно спеченной структурой.

The issue of oxide powdery compositions sintering at formation of fine pored ceramic material has been discussed in the article. The initial mixture consisted of alumina and partially stabilized zirconia powders of micron size. Channel porosity has been produced introduction of burning impregnated of nanopowders of similar oxides suspension textile fiber. Morphology of nanopowders and ceramics sintered samples has been studied by scan electron microscopy. The pore forming behavior at heating has been analyzed by differential thermal analysis. The research showed influence of pore forming additive type on strength and porosity of sintered ceramics. Findings testifies that operation of preliminary impregnation of fibers allows advancing of porous ceramic material strength. Sintered alumina-zirconia ceramics represents porous strengthened material with celled compact sintered structure.

Keywords

КЕРАМИКА, ПОРООБРАЗУЮЩИЕ ДОБАВКИ, НАНОРАЗМЕРНЫЕ ДОБАВКИ, СТРУКТУРА СПЕЧЕННОЙ КЕРАМИКИ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold