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    Strengthening of oxidation resistant materials for gas turbine applications (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Silicon nitride and silicon carbide ceramics were treated to form compressive surface layers. On the silicon carbide, quenching and thermal exposure treatments were used, and on the silicon nitride, quenching, carburizing, and a combination of quenching and carburizing were used. In some cases substantial improvements in impact resistance and/or flexural strength were observed. The presence of compressive surface stresses was demonstrated by slotted rod tests.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA-CR-134661
    Format: application/pdf
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