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TECHNICAL PAPERS: Gas Turbines: Manufacturing, Materials, and Metallurgy

Cyclic Oxidation Behavior of Aluminide, Platinum Modified Aluminide, and MCrAlY Coatings on GTD-111

[+] Author and Article Information
N. S. Cheruvu, K. S. Chan, G. R. Leverant

Electric Power Research Institute, Materials Center for Combustion Turbines at Southwest Research Institute, 6220 Culebra, San Antonio, TX 78238-5166

J. Eng. Gas Turbines Power 122(1), 50-54 (Oct 20, 1999) (5 pages) doi:10.1115/1.483174 History: Received March 24, 1998; Revised October 20, 1999
Copyright © 2000 by ASME
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References

Figures

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Cyclic oxidation behavior of aluminide, Pt-Al, and CoCrAlY coatings at 1950°F (1065°C)
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Cyclic oxidation behavior of aluminide, Pt-Al, and CoCrAlY coatings at 1085°F (1010°C)
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Cyclic oxidation behavior of aluminide, Pt-Al, and CoCrAlY coatings at 1750°F (954°C)
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β-phase variation in aluminide coating after exposure at 1950°F (1065°C) for (a) 400 cycles and (b) 1000 cycles
Grahic Jump Location
β-phase variation in the Pt-Al coating after exposure at 1950°F (1065°C) for (a) 400 cycles and (b) 1000 cycles
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Volume fraction of β in the aluminide and Pt-Al coatings as function of thermal cycles at 1950°F (1065°C)
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Microstructure of aluminide and Pt-Al coatings after 1600 cycles at 1750°F (954°C)
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Influence of exposure to thermal cycles at 1950°F (1065°C) on the width of β depleted and interdiffusion zones in the CoCrAlY coating after (a) 400 cycles and (b) 1000 cycles

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