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Effect of high-temperature annealing on the valence state of Ce ions and the mechanical properties of (ZrO<inf>2</inf>)<inf>0.972</inf> (Y<inf>2</inf>O<inf>3</inf>)<inf>0.02</inf> (CeO<inf>2</inf>)<inf>0.008</inf> crystals

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dc.contributor.author Milovich F.
dc.contributor.author Kulebyakin A.
dc.contributor.author Borik М.
dc.contributor.author Eremina R.
dc.contributor.author Lomonova Е.
dc.contributor.author Myzina V.
dc.contributor.author Tabachkova N.
dc.contributor.author Yatsyk I.
dc.contributor.author Skryleva E.
dc.contributor.author Shulga N.
dc.date.accessioned 2020-01-15T21:17:28Z
dc.date.available 2020-01-15T21:17:28Z
dc.date.issued 2019
dc.identifier.issn 0254-0584
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/155551
dc.description.abstract © 2019 Elsevier B.V. The effect of high-temperature annealing in various atmospheres on the change in the valence state of Ce ions as well as on the phase composition and mechanical properties of (ZrO2)0.972(Y2O3)0.02(CeO2)0.008 crystals has been studied. The crystals have been grown by directional crystallization of the melt in a cold crucible. Electron paramagnetic resonance method has been used to identify Ce3+ ions and their relative amount in crystals. The phase composition and structure of the crystals have been studied by X-ray diffraction and transmission electron microscopy. Hardness and fracture toughness of crystals have been studied by indentation. We show that (ZrO2)0.972(Y2O3)0.02(CeO2)0.008 crystals have high values of hardness and fracture toughness. Anisotropy of fracture toughness values has been detected. Thus the observed increase in the fracture toughness of crystals after vacuum annealing is caused by the increasing transformable t phase content and Ce3+ ion concentration. Sequential annealing in oxidizing and reducing atmospheres has led to reversible changes in the valence state of Ce ions as well as in the phase composition and fracture toughness of (ZrO2)0.972(Y2O3)0.02(CeO2)0.008 crystals.
dc.relation.ispartofseries Materials Chemistry and Physics
dc.subject Anisotropy mechanical properties
dc.subject Skull melting
dc.subject Solid solutions
dc.subject ZrO –Y O –Ce O 2 2 3 2 3
dc.title Effect of high-temperature annealing on the valence state of Ce ions and the mechanical properties of (ZrO<inf>2</inf>)<inf>0.972</inf> (Y<inf>2</inf>O<inf>3</inf>)<inf>0.02</inf> (CeO<inf>2</inf>)<inf>0.008</inf> crystals
dc.type Article
dc.relation.ispartofseries-volume 238
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS02540584-2019-238-SID85070106028


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  • Публикации сотрудников КФУ Scopus [22633]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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