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Combustion Rig Durability Testing of Turbine Ceramics

  • W. D. Carruthers
  • D. W. Richerson
  • K. W. Benn
Part of the Army Materials Technology Conference Series book series (volume 1)

Abstract

A necessary prerequisite to accurate prediction of component life and achievement of system reliability is an understanding of the oxidation/corrosion mechanisms and kinetics for ceramic gas turbine components. In many ways, the situation is analogous to metals technology. The mechanism and rate of oxidation/corrosion can vary markedly, depending upon the composition of the environment, the temperature, and the composition and structure of the material. However, the mode of failure is different for ceramics than for metals. Metals are life-limited in oxidation and corrosion by material removal and the resulting loss in performance. The material-removal rate is much slower for ceramic materials, but the life appears to be limited by formation of surface flaws that reduce the effective material strength.

Keywords

Specimen Holder Flexure Strength FlOW CONTROl VAlVE Cyclic Exposure Spring Washer 
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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References

  1. 1.
    D. W. Richerson and T. M. Yonushonis, “Environmental Effects on the Strength of Silicon Nitride Materials,” in: Proceedings of the 1977 DARPA/NAVSEA Ceramic Gas Turbine Demonstration Engine Program Review, MCIC-78-36, 247–271 (1978).Google Scholar
  2. 2.
    C. Larsen and G. C. Walther, “Property Screening and Evaluation of Ceramic Turbine Engine Materials,” AFML Contract F33615-75-C-5196, Interim Technical Report No. 5 (1978).Google Scholar
  3. 3.
    F. F. Lange, S. C. Singhai, and R. C. Kusnicki, “Phase Relations and Stability Studies in the Si3N4-Y2O3 Pseudoternary Systems,” J. Amer. Ceram Soc. 60 [5–6], 249–252 (1977).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • W. D. Carruthers
    • 1
  • D. W. Richerson
    • 1
  • K. W. Benn
    • 1
  1. 1.A Division of The Garrett CorporationAiResearch Manufacturing Company of ArizonaPhoenixUSA

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