Abstract
It is reported that SiC whiskers and alumina powder can be mixed in water medium when the whiskers are flocculated and the powder deflocculated, and that the composite slip can be cast to high green density. However, sintering of the composite to fully dense material was found to be difficult. The reasons were the formation of whisker networks and the development of the differential sintering stresses in the matrix around the whiskers. Hot pressing was subsequently employed, and the use of the computerized dilatometer allowed the establishment of a quantitative relationship of the densification rate with pressure, temperature and SiC whisker content. The present results help provide a useful basis for the effective design, development and fabrication of the whisker-reinforced ceramic composite.
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Yang, M., Stevens, R. Fabrication of SiC whisker reinforced Al2O3 composites. J Mater Sci 25, 4658–4666 (1990). https://doi.org/10.1007/BF01129922
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DOI: https://doi.org/10.1007/BF01129922