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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
Article

Abstract

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

Keywords

Carbide Silicon Carbide Matrix Composite Thermal Cycle Displacement Curve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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