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    Effects of applied pressure on hot-pressing of Beta-SiC (1984)
    In:  CASI
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    Publication Date: 2019-08-28
    Description: The effects of applied pressure on the densification during hot pressing of beta-SiC compacts were investigated. Beta-SiC powder is Starck made and has the average particle size of about 0.7 micrometer. Hot pressing experiments were carried out in graphite dies at temperatures of 1700 deg to 2300 deg C and at the pressures up to 1000 kg/sq cm. The compacts containing 1 weight percent B4C were examined. Sintered compacts were examined for microstructure and the Rockwell A-scale hardness was measured. The B4C addition was very effective to mitigate the hot pressing conditions. It is found that densification goes with the strengthening of the bonding and does not occur in particle deformation due to concentrated stress.
    Keywords: NONMETALLIC MATERIALS
    Type: NASA-TM-77397 , NAS 1.15:77397
    Format: application/pdf
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