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Evaluation of Gas Turbine Bucket Corrosion Protection Systems Following Long-Time Service in Saudi Arabia PUBLIC ACCESS

[+] Author Affiliations
J. H. Wood, W. F. Schilling, H. J. Aeschbacher

General Electric Co., Schenectady, NY

Paper No. 82-GT-99, pp. V005T11A008; 9 pages
doi:10.1115/82-GT-99
From:
  • ASME 1982 International Gas Turbine Conference and Exhibit
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources; General
  • London, England, April 18–22, 1982
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7960-3
  • Copyright © 1982 by ASME

abstract

This paper describes the ongoing results being obtained from a joint General Electric/ARAMCO program to improve gas turbine bucket corrosion lives in desert environments involving high concentrations of alkali salts and sulfur-containing fuels. The program has involved the insertion of buckets coated with a variety of experimental or developmental coatings into several General Electric MS-5002 gas turbines being operated by ARAMCO in the Eastern Province of Saudi Arabia. Buckets coated by a variety of process techniques, such as pack cementation, physical vapor deposition, plasma spray and sheet cladding, have been evaluated during this program. Service life on some of these coated buckets has now reached approximately 35,000 hr. In general, Pt-Cr-Al pack cementation coatings have been observed to perform well, with the Pt being critical for superior long-time service.

Copyright © 1982 by ASME
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