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Letters to Nature

Nature 389, 49-52 (4 September 1997) | doi:10.1038/37937; Received 10 February 1997; Accepted 7 July 1997

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A ductile ceramic eutectic composite with high strength at 1,873 K

Y. Waku, N. Nakagawa, T. Wakamoto, H. Ohtsubo, K. Shimizu & Y. Kohtoku

  1. Ube Research Laboratory, Corporate Research

Monolithic ceramics are not widely used as structural materials because of their brittleness. Ceramic matrix composites, in which whiskers1, 2, 3 or fibres4, 5, 6, 7 of strong ceramics such as silicon carbide or silicon nitride are embedded in a ceramic matrix, offer improved toughness and strength because the energy of cracks may be dissipated at the whisker/matrix interface.