Effect of Reinforcement of a Silicon Nitride Matrix by Silicon Carbide Whiskers View Full Text


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Article Info

DATE

2000-09

AUTHORS

I. Yu. Kelina, N. I. Ershova, L. A. Plyasunkova

ABSTRACT

A fine-grain high-density tough matrix is a general prerequisite for synthesis of high-strength and crack-resistant composite materials, as well as its self-reinforcement with extended grains of β-Si3N4 and reinforcement with β-SiC crystals. Both approaches are used simultaneously in the present work. It is shown that the reinforcement of a silicon nitride matrix based on ultradisperse powder compositions by SiC whiskers of grade TWS provides hot-pressed ceramics with a high ultimate bending strength (950 MPa) and crack resistance (10 MPa · m1/2). Reinforcement by fine or coarse whiskers increases the crack resistance by 30% with respect to monolithic Si3N4. Composites reinforced by TWS silicon carbide whiskers preserve their high strength up to 1500°C. More... »

PAGES

300-305

References to SciGraph publications

  • 1993-01. Influence of SiC whisker size on mechanical properties of reinforced alumina in JOURNAL OF MATERIALS SCIENCE LETTERS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1023/a:1011304300466

    DOI

    http://dx.doi.org/10.1023/a:1011304300466

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1007003909


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