ZrO/sub 2/-transformation-toughened glass-ceramics prepared by the sol-gel process from metal alkoxides

Journal Article · Fri Jan 31 23:00:00 EST 1986 · J. Am. Ceram. Soc.; (United States)

OSTI ID:5908044

Nogami, M; Tomozawa, M

Glasses of composition 3ZrO/sub 2/.2SiO/sub 2/ were prepared by the sol-gel process from metal alkoxides. Tetragonal ZrO/sub 2/ was precipitated by appropriate heat treatment at 1000/sup 0/ to 1200/sup 0/C. The fracture toughness of these glass-ceramics increased with increasing crystallite size of the tetragonal ZrO/sub 2/, reaching approx. = 5.0 Mn/M/sup 32/ at a size of approx. = 40 Nm. The higher fracture toughness was attributed to tetragonal ..-->.. monoclinic ZrO/sub 2/ transformation toughening.

• Research Organization: Government Industrial Res. Inst., Osaka, Ikead, Osaka 563
• OSTI ID: 5908044
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 69:2; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALKOXIDES
CERAMICS
CHALCOGENIDES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
FRACTURE PROPERTIES
GLASS
HEATING
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION
SEPARATION PROCESSES
SILICON COMPOUNDS
SILICON OXIDES
SOL-GEL PROCESS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES