INVESTIGATION OF THE INFLUENCE OF CORROSION ON THE DURABILITY OF GAS-TURBINE BLADES

The use of gas-turbine engines in sea-going vessels makes it necessary to estimate the load-carrying capacity of structural elements under the influence of corrosive seawater. This investigation is concerned with the influence of high-temperature gas corrosion on the durability of gas-turbine blades. The blade work-conditions are modeled on a special dynamic gas apparatus. The tests are carried out on actual nozzle vanes made of the chromium-nickel alloy EI-868 (0.09% C; 0.46% Si; 0.25% Mn; 25. 58% Cr; 0.52% Ti; 0.94% Mo; 14% W; 0.23% Al; 2.85% Fe; remainder Ni). The vanes are tested in products of combustion of kerosene in air (with and without seawater salts), the temperature of the gas stream being cyclically varied within the limits 1050 reversible reaction 700 degree C. It is found that, in the presence of seawater salts in the gas stream, the oxide films lose some of their protective power and become discontinuous, which promotes more intense oxidation, scale formation and crack growth.

  • Corporate Authors:

    Consultants Bureau

    227 West 17th Street
    New York, NY  USA  10011
  • Authors:
    • Chuprina, V G
    • Tret'yachenko, G N
    • Konev, V A
  • Publication Date: 1977-1

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Filing Info

  • Accession Number: 00174285
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 31 1978 12:00AM