High Temperature Oxidation of Fe-Cr-Al Coatings Prepared by Flame Spray Technique

In the present study, Fe-Cr and (Fe-Cr)-30at% Al coatings were prepared by a flame spray technique. The coated samples were then annealed in a vacuum furnace at 800°C for 2h. The high temperature cyclic oxidation test was performed at 800°C for up to 8 cycles to investigate its oxidation resistance....

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Published inJournal of physics. Conference series Vol. 1204; no. 1; pp. 12115 - 12121
Main Authors Fath, A E, Irmaniar, Aryanto, D, Saptari, S A, Sudiro, T
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2019
Subjects
Aluminum coatings
Annealing furnaces
Chromium
High temperature
Iron
Low carbon steel
Low carbon steels
Oxidation
Oxidation resistance
Oxidation tests
Vacuum furnaces
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Summary:In the present study, Fe-Cr and (Fe-Cr)-30at% Al coatings were prepared by a flame spray technique. The coated samples were then annealed in a vacuum furnace at 800°C for 2h. The high temperature cyclic oxidation test was performed at 800°C for up to 8 cycles to investigate its oxidation resistance. XRD and SEM-EDS were used to characterize the oxidized samples. The results showed that low carbon steel was susceptible to oxidation at this temperature. Thick Fe oxides layer was formed on the steel surface. On the contrary, Fe-Cr-Al coating showed an increase in oxidation resistance of low carbon steel. The FeCr coating with 30 at % Al content exhibited the lowest mass gain after exposure for 8 cycles at 800°C.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1204/1/012115