Several high temperature alloys were evaluated for hot corrosion resistance at 1500 F (816 C) using a controlled atmosphere combustion furnace burning high sulfur diesel fuel. Modification of commercial alloys and binary Ni-Cr and Co-Cr alloys were also studied using this facility. An over-all analysis of corrosion data suggests that the optimum chromium content lies in the 20-30% range in binary alloys studied, and in commercial alloys somewhat lower chromium content can be tolerated. Significant improvements in corrosion resistance were achieved in the case of commercial alloy Udimet-700 by trace additions of lanthanum and yttrium. A high concentration of SO3 in the gas stream and presence of sulfate deposits were conducive to accelerated rates of attack.
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November 1968
Research Article|
November 01 1968
High Temperature Corrosion of Some Gas Turbine Alloys Available to Purchase
R. Viswanathan
R. Viswanathan
*Westinghouse Research Laboratories, Pittsburgh, Pa.
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Received:
May 01 1968
Online ISSN: 1938-159X
Print ISSN: 0010-9312
© 1968 National Association of Corrosion Engineers
1968
CORROSION (1968) 24 (11): 359–368.
Article history
Received:
May 01 1968
Citation
R. Viswanathan; High Temperature Corrosion of Some Gas Turbine Alloys. CORROSION 1 November 1968; 24 (11): 359–368. https://doi.org/10.5006/0010-9312-24.11.359
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