Accession Number : ADP007750

Title :   'Ultra' High-Temperature Microwave Sintering,

Corporate Author : OAK RIDGE Y-12 PLANT TN

Personal Author(s) : Holcombe, C. E. ; Dykes, N. L.

Report Date : 27 APR 1992

Pagination or Media Count : 12

Abstract : 'Ultra' high-temperature microwave processing, utilizing temperatures over 1900 deg C, is addressed. Primary areas of concentration involve titanium diboride (TiB2 - 3 wt% CrB2) and boron carbide (B4C -2.5 wt% C). Using 2.45 GHz radiation, high-density, crack-free specimens can be produced. The importance of 'casketing' and coverings along with material interactions is discussed. Comparison of microwaving with conventional sintering or hot-pressing indicates that microwaving may be advantageous.

Descriptors :   *MICROWAVES, *SINTERING, *CERAMIC MATERIALS, BORON, BORON CARBIDES, CARBIDES, COMPARISON, COVERINGS, CRACKS, DENSITY, HIGH DENSITY, HIGH TEMPERATURE, HOT PRESSING, INTERACTIONS, MATERIALS, PROCESSING, RADIATION, TEMPERATURE, TITANIUM, HARDNESS, TITANIUM BORIDE, ELECTRICAL CONDUCTIVITY, PHYSICAL PROPERTIES, SYMPOSIA.

Subject Categories : Ceramics, Refractories and Glass
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE