Kingsbery, P.; Manzoni, A.M.; Ocaño, P.S.; Többens, D.M.; Stephan-Scherb, C.: High-temperature KCl-induced corrosion of high Cr and Ni alloys investigated by in-situ diffraction. Materials and Corrosion = Werkstoffe und Korrosion 75 (2024), p. 1272-1281
10.1002/maco.202314224
Open Access Version
Abstract:
High-temperature KCl-induced corrosion in laboratory air was observed in situ utilizing X-ray diffraction. High Cr-containing model alloys (Fe-13Cr, Fe-18Cr-12Ni, and Fe-25Cr-20Ni) were coated with KCl and exposed to dry air at 560°C. KCl-free alloys were studied in the equivalent atmosphere as a reference. After exposure to KCl-free environments, all alloys showed the formation of very thin oxide layers, indicating good corrosion resistance. In contrast, KCl-bearing alloys showed distinct damage after exposure.