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Microstructural investigations of pure nickel exposed to KCl induced high temperature corrosion

التفاصيل البيبلوغرافية
العنوان: Microstructural investigations of pure nickel exposed to KCl induced high temperature corrosion
المؤلفون: Trine Nybo Lomholt, Torbjörn Jonsson, Saeed Kiamehr, A. Slomian, Kristian Vinter Dahl
المصدر: Materials at High Temperatures. 32:44-49
بيانات النشر: Informa UK Limited, 2015.
سنة النشر: 2015
مصطلحات موضوعية: Materials science, Ion beam, Mechanical Engineering, High-temperature corrosion, Metallurgy, Metals and Alloys, Analytical chemistry, Oxide, chemistry.chemical_element, Condensed Matter Physics, Microstructure, Focused ion beam, Corrosion, chemistry.chemical_compound, Nickel, chemistry, Mechanics of Materials, Materials Chemistry, Ceramics and Composites, Eutectic system
الوصف: Oxidation of 99·99% pure nickel was studied with and without 0·10 mg cm−2 KCl(s) in an environment containing 5 vol.-%O2, 40 vol.-%H2O and 55 vol.-%N2 at 600°C for up to 168 h. Oxide microstructure was investigated by X-ray diffraction (XRD), focused ion beam (FIB), broad ion beam (BIB) and SEM/EDX. Oxidised nickel shows an approximately parabolic oxide growth rate. The oxide scale is dense with some pores at the oxide/metal interface. Adding small amounts of KCl does not result in a faster corrosion rate of nickel. However, the surface morphology changes and small oxide crusts were observed in the vicinity of former KCl particles. This is proposed to be the result of a NiCl2–KCl eutectic on top of the oxide scale formed above 514°C. The oxide scale formed in the presence of KCl contains more and differently distributed voids than the scale formed without KCl.
تدمد: 1878-6413
0960-3409
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::3a08661f96ac85217797a26bb03bc495
https://doi.org/10.1179/0960340914z.00000000060
رقم الأكسشن: edsair.doi...........3a08661f96ac85217797a26bb03bc495
قاعدة البيانات: OpenAIRE
الوصف
تدمد:18786413
09603409