Accession Number:

ADP007717

Title:

Microwave Processing of Ceramics at Northwestern University,

Descriptive Note:

Corporate Author:

NORTHWESTERN UNIV EVANSTON IL DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

• Johnson, D. Lynn

Report Date:

1992-04-27

Pagination or Media Count:

12.0

Abstract:

Ceramic rods have been sintered in cold wall single mode microwave cavities under a variety of conditions, including microwave heating and plasma heating. High sintering rates, high density and fine grain sizes were achieved for Beta-alumina and A12O3-TiC composites under favorable conditions. Thermal run-away often was observed in alumina during microwave heating if the heating rate was more than a few degrees per second. On the other hand, microwave plasma sintering of alumina was accomplished at very high heating rates 100 Ks.

Descriptors:

• *MICROWAVES
• *CERAMIC MATERIALS
• *SINTERING
• CAVITIES
• DENSITY
• FINES
• HEATING
• HIGH DENSITY
• RATES
• RODS
• SINTERING
• ALUMINUM OXIDES
• TITANIUM ALLOYS
• PLASMAS(PHYSICS)
• SYMPOSIA

Subject Categories:

• Ceramics, Refractories and Glass
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE