Accession Number : ADP007752

Title :   Production of Ultra-Fine Silicon Carbide By Fast Firing in Microwave and Resistance Furnaces,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) INST FOR AEROSPACE RESEA RCH

Personal Author(s) : Kumar, S. N. ; Pant, A. ; Sood, R. R. ; Ng-Yelim, J. ; Holt, R. T.

Report Date : 27 APR 1992

Pagination or Media Count : 8

Abstract : Ultra-fine SiC powder has been synthesized by the carbothermal reduction of silica by microwave and conventional firing techniques. Analysis of these powders by transmission electron microscopy, Auger electron spectroscopy and X-ray diffraction has shown the formation of Beta-SiC. The crystallite size of Beta-SiC produced by the microwave and conventional firing techniques range from 30-200 nm and 50-450 rim respectively. The product obtained from conventional firing also revealed stacking faults over a number of crystallites.

Descriptors :   *MICROWAVES, *CERAMIC MATERIALS, *FIRING(CERAMICS), AUGER ELECTRON SPECTROSCOPY, AUGER ELECTRONS, DIFFRACTION, ELECTRON MICROSCOPY, ELECTRON SPECTROSCOPY, ELECTRONS, FINES, MICROSCOPY, POWDERS, SPECTROSCOPY, X RAY DIFFRACTION, SILICON CARBIDES, FURNACES, OPTICAL PROPERTIES, PHYSICAL PROPERTIES, SYMPOSIA, HEATING.

Subject Categories : Ceramics, Refractories and Glass
      Radiofrequency Wave Propagation
      Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE