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Journal of Materials Science

, Volume 30, Issue 22, pp 5813–5818 | Cite as

Tensile strength of silicon carbide fibre bundles at elevated temperatures

  • G. Emig
  • R. Wirth
Papers

Abstract

The mechanical properties of commercially available SiC-based ceramic fibres were measured in the temperature range from 400–1300°C. The measurements were performed in air and in inert gas atmospheres, respectively. The Nicalon and Tyranno fibres were tested as filament bundles and the decrease in strength occurring at temperatures above 600 °C was found in both atmospheres. To obtain a well-defined gauge length at the testing temperature, a furnace with very steep temperature gradients at both ends was built. To eliminate grip-induced damage in the heating zone the fibre bundles were fixed outside the furnace with cold grip units. These grips guaranteed the uniformity of load distribution imposed on to each of the individual filaments in the fibre bundle. A significant shrinkage of the fibres occurring during the creep test performed under low loads indicates a change in the microstructure of the fibres at high temperatures.

Keywords

Furnace Carbide Tensile Strength Shrinkage Silicon Carbide 
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

© Chapman & Hall 1995

Authors and Affiliations

  • G. Emig
    • 1
  • R. Wirth
    • 2
  1. 1.Institut für Technische Chemie IUniversität ErlangenErlangenGermany
  2. 2.Institut für Chemische TechnikUniversität KarlsruheKarlsruheGermany

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