Nanometer-sized ZrO sub 2 particles prepared by a sol-emulsion-gel method

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Journal of the American Ceramic Society; (USA)

OSTI ID:5901069

Xu, Z; Payne, D A ^[1]; Ramamurthi, S ^[2]

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1. Dept. of Materials Science and Engineering, Materials Research Lab., Univ. of Illinois, Urbana, IL (US)
2. Battelle Memorial Institute, Columbus, OH (US)

ZrO{sub 2} powder was prepared by a sol-emulsion-gel method at temperatures below 140{degrees}C from ZrO(NO{sub 3}){sub 2} {center dot} nH{sub 2}O. The asprepared powder was amorphous, but crystallized into the tetragonal structure by 600{degrees}C. The metastable tetragonal powder (600{degrees}C) was comprised of ultrafine 4- to 6-nm size particles. On heat treatment, the tetragonal form completely transformed into the monoclinic state at 1100{degrees}C. Preliminary studies indicate good sinterability with densities greater than 94% at 1100{degrees}C and with a grain size of 0.25 {mu}m.

• DOE Contract Number: AC02-76ER01198
• OSTI ID: 5901069
• Journal Information: Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 73:9; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
AMORPHOUS STATE
CHALCOGENIDES
CHEMICAL PREPARATION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DENSITY
HEAT TREATMENTS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWDERS
SIZE
SOL-GEL PROCESS
SYNTHESIS
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES