Journal of Materials Science

, Volume 33, Issue 16, pp 4181–4190 | Cite as

Flexural mechanical properties of thermally treated unidirectional and cross-ply Nicalon-reinforced calcium aluminosilicate composites

  • M. J. Blissett
  • P. A. Smith
  • J. A. Yeomans


Long, square cross-section samples of a unidirectional and a cross-ply [0/90]3s silicon carbide (Nicalon) fibre calcium aluminosilicate glass-ceramic matrix composite have been subjected to a range of thermal treatments. They were held at temperatures up to 800 °C above room temperature for 1, 6 or 24 h then slowly cooled or quenched into water. The thermal cycle was repeated up to six times for a small number of samples. The effects of these thermal regimes on Young's modulus, onset of matrix cracking (as assessed by onset of non-linearity in the load–displacement curve) and flexure strength have been monitored using three-point flexure testing. In very broad terms, where clear trends emerged, the intermediate temperature differentials, i.e. 400–650 °C, have been found to have the most detrimental effects on properties, and this has been linked to expected changes in the carboneous interphase and its subsequent replacement by silica. © 1998 Kluwer Academic Publishers


Carbide Silicon Carbide Matrix Composite Thermal Cycle Displacement Curve 
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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • M. J. Blissett
    • 1
  • P. A. Smith
    • 1
  • J. A. Yeomans
    • 1
  1. 1.Department of Materials Science and EngineeringUniversity of SurreyGuildfordUK

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