Structure and properties of the crystals of solid electrolytes (ZrO 2 ) 1 –  x  –  y  (Sc 2 O 3 )  x  (Y 2 O 3 )  y   ( x  = 0.035–0.11,  y  = 0–0.02) prepared by selective melt crystallization

M. A. Borik; S. I. Bredikhin; V. T. Bublik; A. V. Kulebyakin; I. E. Kuritsyna; E. E. Lomonova; F. O. Milovich; V. A. Myzina; V. V. Osiko; S. V. Seryakov; N. Yu. Tabachkova

doi:10.1134/S1023193516070041

Structure and properties of the crystals of solid electrolytes (ZrO₂)_{1 – x – y}(Sc₂O₃)_x(Y₂O₃)_y (x = 0.035–0.11, y = 0–0.02) prepared by selective melt crystallization

作者: Borik M.A.¹, Bredikhin S.I.², Bublik V.T.³, Kulebyakin A.V.¹, Kuritsyna I.E.², Lomonova E.E.¹, Milovich F.O.³, Myzina V.A.¹, Osiko V.V.¹, Seryakov S.V.³, Tabachkova N.Y.³
隶属关系:
1. Prokhorov Institute of General Physics
2. Institute of Solid State Physics
3. National University of Science and Technology MISiS
期: 卷 52, 编号 7 (2016)
页面: 655-661
栏目: Article
URL: https://journals.rcsi.science/1023-1935/article/view/187983
DOI: https://doi.org/10.1134/S1023193516070041
ID: 187983

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Single crystals of solid electrolytes of the (ZrO₂)_1–x–y(Sc₂O₃)_x(Y₂O₃)_y (x = 0.035–0.11, y = 0‒0.02) system were grown by selective melt crystallization. Stabilization of ZrO₂ only with Sc₂O₃ in the concentration range 9–11 mol % Sc₂O₃ did not afford crystals with a cubic structure, and only the introduction of additional Y₂O₃ stabilizers afforded uniform transparent single-phase cubic crystals. All the crystals under study had high microhardness, but low crack resistance. The ion conductivity of crystals with 6 and 9 mol % Sc₂O₃ (6ScZr and 9ScZr, respectively) is comparable to that of 8 mol % Y₂O₃-stabilized ZrO₂ (8YSZ), which is the most suitable electrolyte in the ZrO₂–Y₂O₃ binary system. The specific conductivity of crystals containing 8–10 mol % Sc₂O₃ and 1–2 mol % Y₂O₃ exceeds that of other materials including 8YSZ. The maximum conductivity in the given range of compositions is inherent in the cubic phase with 10 mol % Sc₂O₃ and 1 mol % Y₂O₃ (10Sc1YZr).

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solid electrolytes, zirconia, single crystals, phase composition, structure, ion conductivity, mechanical properties

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Structure and properties of the crystals of solid electrolytes (ZrO₂)_{1 – x – y}(Sc₂O₃)_x(Y₂O₃)_y (x = 0.035–0.11, y = 0–0.02) prepared by selective melt crystallization

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M. Borik

S. Bredikhin

V. Bublik

A. Kulebyakin

I. Kuritsyna

E. Lomonova

F. Milovich

V. Myzina

V. Osiko

S. Seryakov

N. Tabachkova

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Structure and properties of the crystals of solid electrolytes (ZrO2)1 – x – y(Sc2O3)x(Y2O3)y (x = 0.035–0.11, y = 0–0.02) prepared by selective melt crystallization

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Structure and properties of the crystals of solid electrolytes (ZrO₂)_{1 – x – y}(Sc₂O₃)_x(Y₂O₃)_y (x = 0.035–0.11, y = 0–0.02) prepared by selective melt crystallization