Details

Autor(en) / Beteiligte

• Janney, Mark A.
• Kimrey, Hal D.

Titel

Diffusion-Controlled Processes in Microwave-Fired Oxide Ceramics

Ist Teil von

• MRS proceedings, 1990, Vol.189, Article 215

Ort / Verlag

New York, USA: Cambridge University Press

Erscheinungsjahr

1990

Link zum Volltext

Beschreibungen/Notizen

• Processing oxide-based ceramics using microwave heating leads to a number of unexpected results, which can only be interpreted in terms of enhanced diffusion. Enhanced sintering has been observed in alumina and zirconia. Accelerated grain growth in dense, hot-pressed alumina has been demonstrated. Increased diffusion coefficients have been observed for diffusion of oxygen in sapphire. As yet, a satisfactory theory to account for these phenomena has not been developed. This paper reviews the experimental work conducted at the Oak Ridge National Laboratory during the past four years on the processing of oxides in both 2.45 and 28 GHz microwave furnaces.