Breakaway oxidation of austenitic stainless steels induced by alloyed sulphur

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1016/j.corsci.2015.01.007

Ключевые слова: Stainless steel, Raman spectroscopy, SEM, Kinetic parameters, Internal oxidation, High temperature corrosion, A. Stainless steel, B. Raman spectroscopy, B. SEM, C. High temperature corrosion, C. Internal oxidation, C. Kinetic parameters, Austenite, Austenitic stainless steel, Inclusions, Manganese, Manganese oxide, Oxidation, Sulfur, Break-away oxidation, Cr concentration, High sulphur, High temperature corrosions, MnS inclusions, Synthetic air

Аннотация: This work focuses on the effect of alloyed sulphur as MnS inclusions in austenitic stainless steels. AISI 304L and AISI 303 were oxidized at 1000 degrees C in synthetic air. The high sulphur grade, AISI 303, presents a breakaway oxidation with formation of nodules with an inner part composed of alternated layers of Fe-rich and Cr-rich oxides. During oxidation, MnS inclusions near the metal/oxide interface are partially dissociated. Manganese is incorporated in the oxide. The sulphur is trapped in Cr,Mn-oxysulphide aggregates which formation leads to a local decrease of the Cr concentration and consequently to the formation of non-protective Fe-rich oxide. (C) 2015 Elsevier Ltd. All rights reserved.

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Издание

Журнал: CORROSION SCIENCE

Выпуск журнала: Vol. 93

Номера страниц: 100-108

ISSN журнала: 0010938X

Место издания: OXFORD

Издатель: PERGAMON-ELSEVIER SCIENCE LTD

Персоны

Pascal C. (Univ Grenoble Alpes, SIMAP, F-38000 Grenoble, France; CNRS, SIMAP, F-38000 Grenoble, France)
Parry V. (Univ Grenoble Alpes, SIMAP, F-38000 Grenoble, France; CNRS, SIMAP, F-38000 Grenoble, France)
Fedorova E. (Siberian Fed Univ, Polytech Inst, Krasnoyarsk, Russia)
Braccini M. (Univ Grenoble Alpes, SIMAP, F-38000 Grenoble, France; CNRS, SIMAP, F-38000 Grenoble, France)
Chemelle P. (UGITECH SA, Ugine, France)
Meyer N. (UGITECH SA, Ugine, France)
Oquab D. (Univ Toulouse, Inst Carnot CIRIMAT, ENSIACET, Toulouse, France)
Monceau D. (Univ Toulouse, Inst Carnot CIRIMAT, ENSIACET, Toulouse, France)
Wouters Y. (Univ Grenoble Alpes, SIMAP, F-38000 Grenoble, France; CNRS, SIMAP, F-38000 Grenoble, France)
Mantel M. (Univ Grenoble Alpes, SIMAP, F-38000 Grenoble, France; CNRS, SIMAP, F-38000 Grenoble, France; UGITECH SA, Ugine, France)

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