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HOT CORROSION BEHAVIORS OF AN ALUMINIDE COATED NICKEL BASE SUPERALLOY

Wangyu Hu

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Abstract

Hot corrosion behaviors of a nickel base superalloy and aluminide diffusion coating have been studied under Na 2SO 4 and NaCl containing depesits at 900℃. The results demonstrated that both coated and uncoated specimens were not susceptible to the contents of NaCl in salts mixtures due to the formation of the Al 2O 3 scale on their surface.

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What this paper is about

Hot corrosion behaviors of a nickel base superalloy and aluminide diffusion coating have been studied under Na 2SO 4 and NaCl containing depesits at 900℃. The results demonstrated that both coated and uncoated specimens were not susceptible to the contents of NaCl in salts mixtures due to the formation of the Al 2O 3 scale on their surface.

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Available abstract

Hot corrosion behaviors of a nickel base superalloy and aluminide diffusion coating have been studied under Na 2SO 4 and NaCl containing depesits at 900℃. The results demonstrated that both coated and uncoated specimens were not susceptible to the contents of NaCl in salts mixtures due to the formation of the Al 2O 3 scale on their surface.

Key concepts: Superalloy, Aluminide, Materials science, Metallurgy, Corrosion, Nickel aluminide, Coating, Nickel

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