Gas Turbine Bucket Corrosion Protection Developments

[+] Author and Article Information
N. R. Lindblad, W. F. Schilling

General Electric Company, 1 River Road, Bldg. 53-316, Schenectady, NY 12345

H. J. Aeschbacher

ARAMCO Overseas Company, 55 Laan Van Meerdervoort, The Hague, The Netherlands

W. H. Knoll

ARAMCO, P.O. Box 5000, Dhahran, Saudi Arabia

J. Eng. Power 102(1), 104-112 (Jan 01, 1980) (9 pages) doi:10.1115/1.3230203 History: Received December 13, 1978; Online September 28, 2009


This paper describes a joint General Electric/ARAMCO program for improving rotating gas turbine parts lives in desert environments with high concentrations of alkali salts and sulfur-containing fuels. A description of the environment is given along with a definition of the hot corrosion problem. A series of buckets coated with experimental or developmental coatings produced by a variety of processes such as pack cementation, physical vapor deposition, plasma spray and sheet claddings are described and results from actual field trials are discussed. Pt-Cr-Al pack cementation coatings were observed to perform well. Next generation overlay coatings of the MCr-AlY-type applied by plasma spraying electron beam and sheet cladding processes also performed well.

Copyright © 1980 by ASME
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