Sulphur diffusion through a growing chromia scale and effects of water vapour

Sha, C; Yang, L; Cairney, JM; Zhang, J; Young, DJ

Sulphur diffusion through a growing chromia scale and effects of water vapour

Sha, C Yang, L

Cairney, JM Zhang, J Young, DJ

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Corrosion Science, 2023, 222
Issue Date:: 2023-09-01

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Field	Value	Language
dc.contributor.author	Sha, C
dc.contributor.author	Yang, L https://orcid.org/0000-0003-0123-1540
dc.contributor.author	Cairney, JM
dc.contributor.author	Zhang, J
dc.contributor.author	Young, DJ
dc.date.accessioned	2024-04-10T06:17:13Z
dc.date.available	2024-04-10T06:17:13Z
dc.date.issued	2023-09-01
dc.identifier.citation	Corrosion Science, 2023, 222
dc.identifier.issn	0010-938X
dc.identifier.issn	1879-0496
dc.identifier.uri	http://hdl.handle.net/10453/177658
dc.description.abstract	Fe-30Cr (wt%) alloy was exposed to Ar-0.5%SO2 and Ar-10%H2O-0.5%SO2 gases at 650 °C, forming Cr2O3 scales. In dry SO2 for 20 h, sulphur enrichment and scattered Cr-sulphides were observed at the scale-alloy interface, together with internal Cr-sulphide precipitates. After 100 h, sulphur disappeared from the interface, while more internal Cr-sulphides were produced. In wet SO2, the sulphur enrichment and Cr-sulphides were maintained in both times, but no internal sulphidation was seen. Atom probe analysis revealed sulphur enrichment on chromia grain boundaries in both gases, to a greater extent in wet SO2. These effects are discussed in terms of chromia grain boundary diffusion.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Corrosion Science
dc.relation.isbasedon	10.1016/j.corsci.2023.111410
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0912 Materials Engineering, 0913 Mechanical Engineering
dc.subject.classification	Energy
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4017 Mechanical engineering
dc.title	Sulphur diffusion through a growing chromia scale and effects of water vapour
dc.type	Journal Article
utslib.citation.volume	222
utslib.for	0905 Civil Engineering
utslib.for	0912 Materials Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CGT - Centre for Green Technology
utslib.copyright.status	open_access	*
dc.date.updated	2024-04-10T06:17:11Z
pubs.publication-status	Published
pubs.volume	222

Abstract:

Fe-30Cr (wt%) alloy was exposed to Ar-0.5%SO2 and Ar-10%H2O-0.5%SO2 gases at 650 °C, forming Cr2O3 scales. In dry SO2 for 20 h, sulphur enrichment and scattered Cr-sulphides were observed at the scale-alloy interface, together with internal Cr-sulphide precipitates. After 100 h, sulphur disappeared from the interface, while more internal Cr-sulphides were produced. In wet SO2, the sulphur enrichment and Cr-sulphides were maintained in both times, but no internal sulphidation was seen. Atom probe analysis revealed sulphur enrichment on chromia grain boundaries in both gases, to a greater extent in wet SO2. These effects are discussed in terms of chromia grain boundary diffusion.

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http://hdl.handle.net/10453/177658