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1979•Journal of The Electrochemical SocietyOpen access

Fe‐Cr‐Al Alloy, High Temperature Corrosion in Sulfur Vapor

El Miloud Jallouli, J.P. Larpin, M. Lambertin, J.C. Colson

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Abstract

The corrosion of steels is studied at high temperature (750°–950°C) under a low sulfur vapor pressure . Observation and analysis of the kinetic curves obtained allowed several successive corrosion steps to be clarified. The study of the morphology and the composition of the corrosion scales show their transformation during the different steps of the sulfidation process. All the results obtained allow a mechanism of corrosion, closely dependent on the mechanical stresses developed in the scales during the reaction, to be proposed.

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The corrosion of steels is studied at high temperature (750°–950°C) under a low sulfur vapor pressure . Observation and analysis of the kinetic curves obtained allowed several successive corrosion steps to be clarified. The study of the morphology and the composition of the corrosion scales show their transformation during the different steps of the sulfidation process. All the results obtained allow a mechanism of corrosion, closely dependent on the mechanical stresses developed in the scales during the reaction, to be proposed.

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Available abstract

The corrosion of steels is studied at high temperature (750°–950°C) under a low sulfur vapor pressure . Observation and analysis of the kinetic curves obtained allowed several successive corrosion steps to be clarified. The study of the morphology and the composition of the corrosion scales show their transformation during the different steps of the sulfidation process. All the results obtained allow a mechanism of corrosion, closely dependent on the mechanical stresses developed in the scales during the reaction, to be proposed.

Key concepts: Sulfidation, Corrosion, High-temperature corrosion, Alloy, Sulfur, Materials science, Metallurgy, Kinetic energy

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