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In situ study of se...
In situ study of selective dissolution of duplex stainless steel 2205 by electrochemical scanning tunnelling microscopy
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Femenia, M. (author)
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- Pan, Jinshan (author)
- KTH,Materialvetenskap
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- Leygraf, Christofer (author)
- KTH,Materialvetenskap
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Luukkonen, P. (author)
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(creator_code:org_t)
- 2001
- 2001
- English.
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In: Corrosion Science. - 0010-938X .- 1879-0496. ; 43:10, s. 1939-1951
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Selective dissolution of duplex stainless steel 2205 in acidic chloride solutions was studied in situ by electrochemical scanning tunnelling microscopy (STM). In 0.05 M H2SO4 + 1 M NaCl, no appreciable active dissolution was observed by in situ STM imaging at the corrosion potential (E-corr), but at potentials higher than E-corr + 1000 mV some selective dissolution at the austenite-ferrite boundary region occurred. In 4 M H2SO4 + 1 M HCl, STM images revealed active dissolution of ferrite grains at around E-corr + 50 mV. Dissolution of austenite grains started to occur at around E-corr + 150 mV, exhibiting steps of submicron scale on the edges.
Keyword
- duplex stainless steel
- in situ
- local
- electrochemical scanning tunnelling microscopy
- selective dissolution
- single-crystal surfaces
- tunneling-microscopy
- pitting corrosion
- localized corrosion
- spectroscopy
- electrodes
- nitrogen
- xps
Publication and Content Type
- ref (subject category)
- art (subject category)
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