Corrosion behavior of GH3535 alloy in KCl–MgCl2 eutectic salts purified with magnesium

The corrosion behavior of GH3535 alloys in KCl–MgCl eutectic salts with or without magnesium (Mg) was investigated using the static immersion tests. The effect of purification treatment on the corrosion of GH3535 specimens was also evaluated by the different analysis. The KCl–MgCl salts purified wit...

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Bibliographic Details
Published inCorrosion reviews Vol. 41; no. 5; pp. 607 - 614
Main Authors Li, Na, Liu, Qi, Yin, Huiqin, Ling, Changjian, Wang, Yang, Tang, Zhongfeng
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 26.10.2023
Walter de Gruyter GmbH
Subjects
Corrosion
Corrosion effects
Corrosion rate
Diffusion rate
Eutectic alloys
GH3535 alloy
Hydrates
Immersion tests (corrosion)
Infrared spectra
Infrared spectroscopy
KCl–MgCl
Magnesium
Magnesium chloride
molten salt
Nickel base alloys
Potassium chloride
Purification
Salts
Superalloys
Water purification
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Summary:The corrosion behavior of GH3535 alloys in KCl–MgCl eutectic salts with or without magnesium (Mg) was investigated using the static immersion tests. The effect of purification treatment on the corrosion of GH3535 specimens was also evaluated by the different analysis. The KCl–MgCl salts purified with Mg and reducing service temperature can slow down the corrosion rate of GH3535 specimens. Infrared spectra results showed that purification treatment reduced the content of crystal water in the KCl–MgCl salts. The difference of hydrate content in KCl–MgCl salts and the diffusion rate of Cr in alloy are the main reasons for the change of GH3535 specimens corrosion rate.
ISSN:0334-6005
2191-0316
DOI:10.1515/corrrev-2022-0058