Microstructure evolution in microwave sintered alumina

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6619604

Janney, M A; Kimrey, H D

Comparisons were made of sintering rate, apparent activation energy, surface area, and pore size distribution for alumina sintered in a quasi-optical microwave furnace at 28 GHz and alumina sintered in a conventional tungsten element furnace. The sintering rates for microwave firing were much higher. The apparent activation energy for microwave sintering was about one-third that of conventional sintering. Pore size at a given density was larger for the microwave sintered samples. It is suggested that microwave firing may enhance densification relative to coarsening in sintering. 6 refs., 7 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6619604
• Report Number(s): CONF-880504-9; ON: DE89004186
• Resource Relation: Conference: 90. annual meeting of American Ceramic Society, Cincinnati, OH, USA, 1 May 1988; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SINTERED MATERIALS
MICROSTRUCTURE
ALUMINIUM OXIDES
CERAMICS
MICROWAVE HEATING
NUMERICAL DATA
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CRYSTAL STRUCTURE
DATA
HEATING
INFORMATION
MATERIALS
OXIDES
OXYGEN COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies