Effect of ZrO/sub 2/ inclusions on the sinterability of Al/sub 2/O/sub 3/

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1988.tb05892.x· OSTI ID:6480232

Lange, F F; Yamaguchi, T; Davis, B I; Morgan, P E.D.

The sinterability of Al/sub 2/O/sub 3//ZrO/sub 2/ composite powder compacts containing 2 and 10 vol% ZrO/sub 2/ was compared to the sinterability of their single-phase constituents through constant-heating-rate experiments. The ZrO/sub 2/ inclusion phase delayed the initiation of bulk shrinkage and the temperature of maximum strain rate by -- 100/sup 0/C. The ZrO/sub 2/ inclusion phase also significantly inhibited grain growth. These results, discussed with regard to the thermodynamics of pore disappearance, suggest that phenomena inhibiting grain growth may also inhibit densification.

• Research Organization: Materials Dept., College of Engineering, Univ. of California, Santa Barbara, CA (US)
• OSTI ID: 6480232
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 71:6; ISSN JACTA
• 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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANNEALING
BULK DENSITY
CHALCOGENIDES
COMPOSITE MATERIALS
DATA
DENSITY
EXPERIMENTAL DATA
FABRICATION
GRAIN GROWTH
HEAT TREATMENTS
INCLUSIONS
INFORMATION
MATERIALS
METALLURGICAL EFFECTS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWDERS
SINTERING
STABILITY
STRAINS
THERMODYNAMICS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES