Features of the local structure and transport properties of ZrO2-Y2O3-Eu2O3 solid solutions

Борик, М. А.; Volkova, Тatyana V.; Курицына, И. Е.; Ломонова, Е. Е.; Мызина, В. А.; Ryabochkina, P. A.; Tabachkova, N. Yu.

doi:10.1016/j.jallcom.2018.08.117

Cited by 24 publications

(18 citation statements)

References 16 publications

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“…incorporation into a superficial site. In studies by Yugami et al [104] and Borik et al [51,52], three to four different Eu 3? environments in Y 3? /Eu 3?…”

Section: Discussionmentioning

confidence: 96%

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Understanding the local structure of Eu3+- and Y3+-stabilized zirconia: insights from luminescence and X-ray absorption spectroscopic investigations

et al. 2020

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This study combines bulk structural and spectroscopic investigations of Eu3+- or Y3+/Eu3+ co-doped tetragonal and cubic zirconia polymorphs to gain an in-depth understanding of the solid solution formation process. Our bulk structural characterizations show that the dopant is homogenously distributed in the ZrO2 host structure resulting in an increase of the bulk symmetry with increasing dopant substitution (from 8 to 26 mol%). The local site symmetry around the Eu3+ dopant, however, determined with luminescence spectroscopy (TRLFS), remains low in all samples. Results obtained with X-ray pair distribution function and X-ray absorption spectroscopy show that the average coordination environment in the stabilized zirconia structures remains practically unchanged. Despite this very constant average dopant environment, site-selective TRLFS data show the presence of three nonequivalent Eu3+ environments in the ZrO2 solid structures. These Eu3+ environments are assumed to arise from Eu3+ incorporation at superficial sites, which increase in abundance as the size of the crystallites decrease, and incorporation on two bulk sites differing in the location of the oxygen vacancies with respect to the dopant cation.

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“…incorporation into a superficial site. In studies by Yugami et al [104] and Borik et al [51,52], three to four different Eu 3? environments in Y 3? /Eu 3?…”

Section: Discussionmentioning

confidence: 96%

“…Laserinduced lanthanide luminescence spectroscopy, especially of Eu 3? , has further been employed to study the local structure of zirconia solid solutions [1,21,[30][31][32][50][51][52][53][54][55]. Here, differing luminescence behavior is observed for m-ZrO 2 as compared to the high-temperature polymorphs (t-and c-ZrO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Understanding the local structure of Eu3+- and Y3+-stabilized zirconia: insights from luminescence and X-ray absorption spectroscopic investigations

et al. 2020

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“…Авторами работ [5][6][7][8] показано, что на ионную проводимость наряду с особенностями фазового состава материала влияет также локальная кристаллическая структура. Авторы работ [5,6] на основе результатов моделирования выявили, что увеличение относительной доли вакансий, расположенных в первой координационной сфере по отношению к катиону стабилизиру-ющего оксида, приводит к снижению ионной проводимости.…”

Section: Introductionunclassified

“…7−38, y = 0.1) методами оптической спектроскопии и измерений их ионной проводимости нами экспериментально показано, что увеличение относительной доли ионов Y 3+ , имеющих вакансию в первой координационной сфере, приводит к уменьшению ионной проводимости данных кристаллов [8].…”

Section: Introductionunclassified

Особенности локальной структуры и транспортные свойства кристаллов ZrO-=SUB=-2-=/SUB=--Sc-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=--Y-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=- и ZrO-=SUB=-2-=/SUB=--Sc-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=--Yb-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-

Борик¹,

Волкова²,

Курицина³

et al. 2019

Журнал Технической Физики

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“…Heat treatment, annealing in vacuum and in air [6,7], laser processing of crystals [8], microalloying with rare-earth elements [9,10] are effective. Many works have been devoted to the study of the structure of PSZ crystals [11,12], but their tribological properties and crack resistance have been studied very little. The amount of stabilizing additive influences most strongly, especially on crack resistance, but this issue has not been studied much.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured crystals of zirconium dioxide for mechanical modules of instruments

Alisin¹

2019

BALTTRIB

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the work is devoted to the study of nanostructured partially stabilized crystals of zirconium dioxide with respect to the problem of improving the reliability of the jeweled bearings of precision instruments. The effect of yttrium oxide stabilizing additive on the crack resistance and mechanical properties of crystals has been investigated. A correlation has been established between the concentration of the stabilizing additive Y2O3 and the crack resistance. The tribological properties of crystals were determined using a friction test machine under sliding conditions. The crack resistance and mechanical characteristics of the crystals were determined by the kinetic microindentation method. Results of the comparative analysis of mechanical properties with the used crystals and ceramics are provided. Bench tests of full-scale thrust bearings confirmed a higher load-bearing capacity of the friction bearing of the instrument with a mock-up thrust bearing made of a zirconium dioxide crystal in comparison with a thrust bearing made of sapphire in the absence of significant damage to the friction surface.

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Features of the local structure and transport properties of ZrO2-Y2O3-Eu2O3 solid solutions

Cited by 24 publications

References 16 publications

Understanding the local structure of Eu3+- and Y3+-stabilized zirconia: insights from luminescence and X-ray absorption spectroscopic investigations

Understanding the local structure of Eu3+- and Y3+-stabilized zirconia: insights from luminescence and X-ray absorption spectroscopic investigations

Nanostructured crystals of zirconium dioxide for mechanical modules of instruments

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