The effect of a galia (Ga2O3) addition on the crystallographic phase transformations and the grain growth behavior of yttria stabilized zirconia (YSZ) were investigated regarding powders containing different amounts of galia in the range of 0-25 mol %. Ternary compositions of galia-YSZ sponge-like cryogels were prepared by the sol-gel method combining freeze-drying process and calcination of dried powders at different temperatures for 2 h in air. Crystallographic phase transitions were analyzed via X-ray diffraction (XRD) and exceptional powder particle morphology of internal nano voids derived from the freeze-drying technique was investigated by using Scanning Transmission Electron Microscope (STEM). It was shown that galia supressed the grain growth process in yttria stabilized zirconia and had no effect on the internal voids obtained. (C) 2018 Elsevier B.V. All rights reserved.
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Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, Israel
NRCN, POB 9001, IL-84190 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
Shekel, Gal
Shandalov, Michael
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NRCN, POB 9001, IL-84190 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
Shandalov, Michael
Hayun, Hagay
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Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
Hayun, Hagay
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Kimmel, Giora
Shamir, Dror
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NRCN, POB 9001, IL-84190 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
机构:
Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, Israel
NRCN, POB 9001, IL-84190 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
Shekel, Gal
Shandalov, Michael
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机构:
NRCN, POB 9001, IL-84190 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
Shandalov, Michael
Hayun, Hagay
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机构:
Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel
Hayun, Hagay
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机构:
Kimmel, Giora
Shamir, Dror
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h-index: 0
机构:
NRCN, POB 9001, IL-84190 Beer Sheva, IsraelBen Gurion Univ Negev, Unit Energy Engn, IL-84105 Beer Sheva, Israel