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2. Microstructure and Chemical Composition of Fe-Cr Alloy Tempered in High Temperature and Atmosphere Containing Ar-SO2

Author

Radziszewska A., Kranzmann A., Dörfel I., Feijoo M. Mosquera, and Solecka M.

Subjects
Microstructure, High-temperature corrosion, X20Cr13 steel, Mining engineering. Metallurgy, TN1-997, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

The paper presents the microstructure, chemical and phase composition of thin scale, obtained as a result of high-temperature corrosion of X20Cr13 stainless steel. Samples were exposed to gas atmosphere of the following composition: 0.25 vol.% of SO2 and 99.75 vol.% of Ar at 600 °C for 5 h. As a consequence, thin compact scale was formed on steel surface. This scale consisted of three different zones. An amorphous zone was formed close to steel surface. Then, nanocrystalline zone could be observed. Finally, larger grains were formed during the corrosion process. The analysis of the chemical composition revealed higher concentration of chromium near steel surface. In contrast, to chromium, the content of iron, increased near the scale surface. It was found out that the (Cr, Mn, Fe)5O12 phase appeared in the thin scale.

Published
2016
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8. Qualitative und quantitative Analysen dünner Funktionsschichten für das Kleben durch XPS-, AES-, REM- und TEM-Untersuchungen

Author

Lebelt, P., Gehrke, J., Hallmeier, K.-H., Reuther, H., Dörfel, I., Lebelt, P., Gehrke, J., Hallmeier, K.-H., Reuther, H., and Dörfel, I.

Abstract

Die Schwachstelle aller Klebverbindungen ist die Grenzschicht zwischen Klebstoff und Substrat. Aus diesem Grund ist eine Optimierung hinsichtlich Klebstoffauswahl und Oberflächenvorbereitung/-vorbehandlung des Substrats unerlässlich, um definiert und sicher zu kleben.

Published
2009

9. MICROSTRUCTURE AND CHEMICAL COMPOSITION OF Fe-Cr ALLOY TEMPERED IN HIGH TEMPERATURE AND ATMOSPHERE CONTAINING Ar-SO2.

Author

RADZISZEWSKA, A., KRANZMANN, A., DÖRFEL, I., FEIJOO, M. MOSQUERA, and SOLECKA, M.

Subjects
IRON alloys, MICROSTRUCTURE, HIGH temperature metallurgy, SULFUR oxides, STEEL corrosion
Abstract

The paper presents the microstructure, chemical and phase composition of thin scale, obtained as a result of hightemperature corrosion of X20Cr13 stainless steel. Samples were exposed to gas atmosphere of the following composition: 0.25 vol.% of SO2 and 99.75 vol.% of Ar at 600 °C for 5 h. As a consequence, thin compact scale was formed on steel surface. This scale consisted of three different zones. An amorphous zone was formed close to steel surface. Then, nanocrystalline zone could be observed. Finally, larger grains were formed during the corrosion process. The analysis of the chemical composition revealed higher concentration of chromium near steel surface. In contrast, to chromium, the content of iron, increased near the scale surface. It was found out that the (Cr, Mn, Fe)5O12 phase appeared in the thin scale. [ABSTRACT FROM AUTHOR]

Published
2016
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