Cyclic oxidation of AISI 316L stainless steel – influence of water vapour between 800 and 1000°C. (May 2014)

• Record Type: Journal Article
• Authors: Buscail, H.; Rolland, R.; Perrier, S.
• Is Part Of: Corrosion engineering, science, and technology. Volume 49:Number 3(2014)
• Page Start: 169
• Page End: 179
• Publication Date: 2014-05
• Subjects: Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1179/1743278213Y.0000000111
• Languages: English
• ISSNs: 1478-422X

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <sec> <p>At 800 and 900°C, 10 vol.-%H₂O in air has little effect on the AISI 316L stainless steel oxidation under isothermal and cyclic conditions. The oxide scale is composed of Cr₂O₃ with a small amount of Mn_1·5Cr_1·5O₄ at the external interface. Results show that water molecules or protons can modify the diffusion process in the scale and lower the oxidation rate. At 1000°C, a deleterious effect of water vapour on the scale structure is observed. <italic>In situ</italic> X-ray diffraction was used to analyse the oxide formation on AISI 316L specimens during isothermal oxidation at 1000°C in moist air. Results show that the breakaway oxidation is due to the iron oxidation starting after 31 h oxidation. This leads to an external Fe₂O₃ scale growth and an internal multilayered FeCr₂O₄ scale formation. In wet air, thermal cycling conditions lead to continuous weight losses at 1000°C, whereas the scale remains adherent in dry air.</p> </sec> </abstract>