Formation of zirconia solid solutions containing alumina prepared by new preparation method

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb05425.x· OSTI ID:7045338

Ishida, Koji; Hirota, Ken; Yamaguchi, Osamu ^[1]; Kume, Hideki; Inamura, Suguru; Miyamoto, Hiroki ^[2]

---

1. Doshisha Univ., Kyoto (Japan). Dept. of Applied Chemistry
2. Osaka Prefectural Inst. of Industrial Technology (Japan)

In the system ZrO[sub 2]-Al[sub 2]O[sub 3], a new method for preparing ZrO[sub 2] solid solutions from ZrCl[sub 4] and AlCl[sub 3] using hydrazine monohydrate is investigated. c-ZrO[sub 2] solid solutions containing up to [approximately]40 mol% Al[sub 2]O[sub 3] crystallize at low temperatures from amorphous materials. The formation mechanism is discussed from IR spectral data. The values of the lattice parameter a increase linearly from 0.5072 to 0.5105 nm with increasing Al[sub 2]O[sub 3] content. At higher temperatures, transformation of the solid solutions proceeds as follows: c(ss) [r angle] t(ss) [r angle] t(ss) + [alpha]-Al[sub 2]O[sub 3] [r angle] m + [alpha]-Al[sub 2]O[sub 3][center dot]m-ZrO[sub 2]-[alpha]-Al[sub 2]O[sub 3] composite ceramics are fabricated by hot isostatic pressing for 2 h at 1,250 C and 196 MPa. Microstructures and mechanical properties are examined, in connection with increasing Al[sub 2]O[sub 3] content.

• OSTI ID: 7045338
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:5; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DIAGRAMS
EXPERIMENTAL DATA
FABRICATION
HOT PRESSING
INFORMATION
LATTICE PARAMETERS
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHASE TRANSFORMATIONS
PRESSING
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES