Metastable zirconia phases prepared from zirconium alkoxide and yttrium acetylacetonate: Part 1--Formation and characterization of metastable zirconia solid solutions

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Materials Research Bulletin; (United States)

DOI:https://doi.org/10.1016/0025-5408(93)90033-A· OSTI ID:6250189

Shimazaki, M; Hirota, K; Yamaguchi, O ^[1]; Fujii, S; Tamamaki, M ^[2]; Inamura, S; Miyamoto, M ^[3]; Kume, S ^[4]

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1. Doshisha Univ., Kyoto (Japan). Faculty of Engineering
2. Japan Abrasive Co., Ltd., Osaka (Japan)
3. Osaka Prefectural Inst. of Industrial Technology (Japan)
4. Ryukoku Univ., Shiga (Japan). Dept. of Materials Chemistry

In the ZrO[sub 2]-Y[sub 2]O[sub 3] system, metastable ZrO[sub 2] solid solutions containing up to [approximately]46 mol% Y[sub 2]O[sub 3] crystallize at low temperatures from amorphous materials prepared by the simultaneous hydrolysis of zirconium isopropoxide and yttrium acetylacetonate: t- and c-ZrO[sub 2] phases below and above 8 mol% Y[sub 2]O[sub 3], respectively. The variation of the lattice parameters of both phases is determined as a function of Y[sub 2]O[sub 3] content. The value of the lattice parameter of pure ZrO[sub 2] (tetragonal) is a = 0.5085 nm and c = 0.5170 nm. Powder characterization has been examined using c-ZrO[sub 2] solid solution powders prepared in the composition of ZrO[sub 2]/Y[sub 2]O[sub 3][equals]80/20 mol%. Crystallite size, particle size and particle morphology are strongly dependent on heating temperature. Surface areas of powders do not drop below 10 m[sup 2]/g until the heating temperature is above 900 C.

• OSTI ID: 6250189
• Journal Information: Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 28:9; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACETYLACETONE
ALKOXIDES
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DECOMPOSITION
HYDROLYSIS
KETONES
LATTICE PARAMETERS
LYSIS
MORPHOLOGY
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
POWDERS
REAGENTS
SIZE
SOLVOLYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES