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Title: Strength and phase stability of yttria-ceria-doped tetragonal zirconia/alumina composites sintered and hot isostatically pressed in argon-oxygen gas atmosphere

Abstract

Yttria-ceria-doped tetragonal zirconia ((Y,Ce)-TZP)/alumina (Al{sub 2}O{sub 3}) composites were fabricated by hot isostatic pressing at 1400{degrees} to 1450{degrees}C and 196 MPa in an Ar-O{sub 2} atmosphere using the fine powders prepared by hydrolysis of ZrOCl{sub 2} solution. The composites consisting of 25 wt% Al{sub 2}O{sub 3} and tetragonal zirconia with compositions 4 mol% YO{sub 1.5}{minus}4 mol% CeO{sub 2}-ZrO{sub 2} and 2.5 mol% YO{sub 1.5}{minus}5.5 mol% CeO{sub 2}-ZrO{sub 2} exhibited means fracture strength as high as 2000 MPa and were resistant to phase transformation under saturated water vapor pressure at 180{degrees}C (1 MPa). Postsintering hot isostatic pressing of (4Y, 4Ce)-TZP/Al{sub 2}O{sub 3} and (2.5Y, 5.5Ce)-TZP/Al{sub 2}O{sub 3} composites was useful to enhance the phase stability under hydrothermal conditions and strength.

Authors:
;  [1]
  1. Noritake Co., Ltd., Noritake, Nagoya (JP)
Publication Date:
OSTI Identifier:
5159354
Resource Type:
Journal Article
Journal Name:
Journal of the American Ceramic Society; (United States)
Additional Journal Information:
Journal Volume: 74:3; Journal ID: ISSN 0002-7820
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; FRACTURE PROPERTIES; STABILITY; ZIRCONIUM OXIDES; ARGON; CERIUM OXIDES; CONTROLLED ATMOSPHERES; DOPED MATERIALS; FABRICATION; HOT PRESSING; OXYGEN; PHASE TRANSFORMATIONS; POWDERS; SINTERING; TETRAGONAL LATTICES; YTTRIUM OXIDES; ALUMINIUM COMPOUNDS; ATMOSPHERES; CERIUM COMPOUNDS; CHALCOGENIDES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELEMENTS; FLUIDS; GASES; MATERIALS; MATERIALS WORKING; MECHANICAL PROPERTIES; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PRESSING; RARE EARTH COMPOUNDS; RARE GASES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; ZIRCONIUM COMPOUNDS; 360603* - Materials- Properties

Citation Formats

Hirano, M, and Inada, H. Strength and phase stability of yttria-ceria-doped tetragonal zirconia/alumina composites sintered and hot isostatically pressed in argon-oxygen gas atmosphere. United States: N. p., 1991. Web. doi:10.1111/j.1151-2916.1991.tb04067.x.
Hirano, M, & Inada, H. Strength and phase stability of yttria-ceria-doped tetragonal zirconia/alumina composites sintered and hot isostatically pressed in argon-oxygen gas atmosphere. United States. https://doi.org/10.1111/j.1151-2916.1991.tb04067.x
Hirano, M, and Inada, H. 1991. "Strength and phase stability of yttria-ceria-doped tetragonal zirconia/alumina composites sintered and hot isostatically pressed in argon-oxygen gas atmosphere". United States. https://doi.org/10.1111/j.1151-2916.1991.tb04067.x.
@article{osti_5159354,
title = {Strength and phase stability of yttria-ceria-doped tetragonal zirconia/alumina composites sintered and hot isostatically pressed in argon-oxygen gas atmosphere},
author = {Hirano, M and Inada, H},
abstractNote = {Yttria-ceria-doped tetragonal zirconia ((Y,Ce)-TZP)/alumina (Al{sub 2}O{sub 3}) composites were fabricated by hot isostatic pressing at 1400{degrees} to 1450{degrees}C and 196 MPa in an Ar-O{sub 2} atmosphere using the fine powders prepared by hydrolysis of ZrOCl{sub 2} solution. The composites consisting of 25 wt% Al{sub 2}O{sub 3} and tetragonal zirconia with compositions 4 mol% YO{sub 1.5}{minus}4 mol% CeO{sub 2}-ZrO{sub 2} and 2.5 mol% YO{sub 1.5}{minus}5.5 mol% CeO{sub 2}-ZrO{sub 2} exhibited means fracture strength as high as 2000 MPa and were resistant to phase transformation under saturated water vapor pressure at 180{degrees}C (1 MPa). Postsintering hot isostatic pressing of (4Y, 4Ce)-TZP/Al{sub 2}O{sub 3} and (2.5Y, 5.5Ce)-TZP/Al{sub 2}O{sub 3} composites was useful to enhance the phase stability under hydrothermal conditions and strength.},
doi = {10.1111/j.1151-2916.1991.tb04067.x},
url = {https://www.osti.gov/biblio/5159354}, journal = {Journal of the American Ceramic Society; (United States)},
issn = {0002-7820},
number = ,
volume = 74:3,
place = {United States},
year = {1991},
month = {3}
}