TY - JOUR
T1 - Sintering of Ceria‐Doped Tetragonal Zirconia Crystallized in Organic Solvents, Water, and Air
AU - Sato, Tsugio
AU - Dosaka, Kenji
AU - Yoshioka, Toshiaki
AU - Okuwaki, Akitsugu
AU - Torii, Kazuo
AU - Onodera, Yoshiro
PY - 1992/3
Y1 - 1992/3
N2 - Amorphous CeO2–ZrO2 gels were prepared by coprecipitation in ammonia solutions. The onset of crystallization of the gels, from calcining in air, was 420°C, while 200° to 250°C in the presence of water and organic solvents such as methanol and ethanol. The sintering behaviors of CeO2–ZrO2 powders were sensitive to the crystallizing conditions, since hard agglomerates formed when the precipitated gels were crystallized by normal calcination in air, whereas soft agglomerates formed when they were crystallized in water or organic solvents. CeO2–ZrO2 powders crystallized in methanol and water at 250°C were sintered to full theoretical density at 1150° and 1400°C, respectively, whereas that crystallized by calcination in air at 450°C was sintered to only 95.2% of theoretical density, even at 1500°C.
AB - Amorphous CeO2–ZrO2 gels were prepared by coprecipitation in ammonia solutions. The onset of crystallization of the gels, from calcining in air, was 420°C, while 200° to 250°C in the presence of water and organic solvents such as methanol and ethanol. The sintering behaviors of CeO2–ZrO2 powders were sensitive to the crystallizing conditions, since hard agglomerates formed when the precipitated gels were crystallized by normal calcination in air, whereas soft agglomerates formed when they were crystallized in water or organic solvents. CeO2–ZrO2 powders crystallized in methanol and water at 250°C were sintered to full theoretical density at 1150° and 1400°C, respectively, whereas that crystallized by calcination in air at 450°C was sintered to only 95.2% of theoretical density, even at 1500°C.
KW - agglomeration
KW - alcohol
KW - cerium
KW - crystallization
KW - zirconia‐tetragonal polycrystals (TZP)
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U2 - 10.1111/j.1151-2916.1992.tb07841.x
DO - 10.1111/j.1151-2916.1992.tb07841.x
M3 - Article
AN - SCOPUS:84985154323
VL - 75
SP - 552
EP - 556
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 3
ER -