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Ceramic Fibres for the Reinforcement of Gas Turbine Blades

  • J. E. Bailey
  • H. A. Barker
Part of the Materials Science Research book series (MSR, volume 5)

Abstract

Continuous filament reinforcement of nickel base alloy turbine blades with SiC, W, or Al203 has been considered as a means of improving creep resistance at high temperatures (up to 1200°0). SiC is readily available in fibre form, but reacts chemically with the matrix; tungsten wires are excessively dense; and alumina fibres have not been available until recently. Extrusion or pulling of molten alumina was tried but abandoned at an early stage. Extrusion and sintering of a very concentrated aqueous dispersion of hydrated alumina has been moderately successful. Bend strengths of about 80 x 103 psi at 85% theoretical density are better than most commercially available sintered alumina rods of larger diameter and are capable of withstanding stresses >10 x 103 psi for 100 hr at 1100°C, Fabrication of composite blades using polycrystalline alumina (or continuous sapphire single crystal) fibres has not proved successful by liquid infiltration since severe damage is caused to the fibres.

Keywords

Turbine Blade Tungsten Wire Ceramic Fibre Alumina Hydrate Bend Strength 
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

© Plenum Press, New York 1971

Authors and Affiliations

  • J. E. Bailey
    • 1
  • H. A. Barker
    • 1
  1. 1.University of SurreyGuildford, SurreyEngland

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