Journal article
Hot Corrosion Behavior of a Cr-Modified Aluminide Coating on a Ni-Based Superalloy
A Cr-modified aluminide coating is prepared on a Ni-based superalloy using arc ion plating and subsequent pack cementation aluminizing. Hot corrosion behavior of the Cr-modified aluminide coating exposed to molten Na2SO4/K2SO4 (3:1) or Na2SO4/NaCl (3:1) salts at 900 °C in static air are evaluated as well as the aluminide coating.
The results indicate that compared with the aluminide coating, the anti-corrosion properties of the Cr-modified aluminide coating in the both salts are improved, which should be attributed to the beneficial effect of the Cr in the coating. The corrosion mechanism of the Cr-modified aluminide coating, especially the role of Cr in the mixture salt corrosion, is discussed.
Language: | English |
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Publisher: | The Chinese Society for Metals |
Year: | 2014 |
Pages: | 627-634 |
ISSN: | 21941289 and 10067191 |
Types: | Journal article |
DOI: | 10.1007/s40195-014-0108-5 |
Arc ion plating Characterization and Evaluation of Materials Chemistry and Materials Science Cr-modified aluminide coating Hot corrosion Material Science Metallic Materials Nanotechnology Organometallic Chemistry Pack cementation aluminizing Spectroscopy/Spectrometry Superalloy Tribology, Corrosion and Coatings