Hot Corrosion of Gas Turbine Rotor Blade Materials due to a Long Term Field Testing PUBLIC ACCESS

[+] Author Affiliations
H. Doi, T. Onoda

Mitsubishi Metal Mining Co., Ltd., Omiya City, Saitama, Japan

Y. Harada

Mitsubishi Heavy Industries, Ltd., Akashi City, Hyogo, Japan

Paper No. 72-GT-87, pp. V001T01A086; 16 pages
  • ASME 1972 International Gas Turbine and Fluids Engineering Conference and Products Show
  • ASME 1972 International Gas Turbine and Fluids Engineering Conference and Products Show
  • San Francisco, California, USA, March 26–30, 1972
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7981-8
  • Copyright © 1972 by ASME


As a result of 22,000 hr gas turbine engine operation burning residual oil fuels of high sulfur concentration, Inconel-700 blade has been severely affected owing to hot corrosion, whereas Inconel-X has been virtually free from such an attack. Consideration of the alloy composition suggests that molybdenum and cobalt in Inconel-700 and iron in Inconel-X are important elements in relation to hot corrosion. On the basis of metallographic, electron microprobe and X-ray diffraction analyses, the effect of the alloy composition in regard to hot corrosion mechanisms has been discussed in some detail.

Copyright © 1972 by ASME
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