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The initial effect ...
The initial effect of KCl deposit on alumina scales characterized by ToF-SIMS and AES
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- Engkvist, Josefin, 1972 (author)
- Högskolan Dalarna,Materialvetenskap,Chalmers University of Technology, Göteborg, Sweden
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- Israelsson, Niklas, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Göteborg, Sweden
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- Bexell, Ulf (author)
- Högskolan Dalarna,Materialteknik
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(creator_code:org_t)
- 2012-06-19
- 2013
- English.
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In: Surface and Interface Analysis. - : Wiley. - 1096-9918 .- 0142-2421. ; 45:1, s. 445-448
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Abstract
Subject headings
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- A FeCrAl alloy was preoxidized to form a protective alumina scale, and the effect of KCl deposits on the alumina scale was investigated while exposed during 1 and 24 h at 600 degrees C. However, impurity concentrations in the alumina scale change the ion conductivity and hence affect its protective properties. Therefore, Auger electron spectroscopy and time-of-flight secondary ion mass spectrometry were used to characterize the alumina scales and detect traces of K and Cl. The results showed that K and Cl existed as large sharp-edged crystals surrounded by a dendritic network after 1 h. However, after 24 h, those were dissolved, and K together with Cl was detected only in the outer layer of the duplex alumina scale, which was formed during preoxidation.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Korrosionsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
Keyword
- Alumina
- initial oxidation
- KCl
- dry
- FeCrAl
- oxidation
- SIMS
- AES
- alloy
- o-2
- Steel Forming and Surface Engineering
Publication and Content Type
- art (subject category)
- ref (subject category)
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