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An ESEM in situ inv...
Abstract
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- The initial oxidation of a low-alloyed steel (Fe-2.25Cr-1Mo) in the presence of small amounts of KCl(s) have been investigated through ESEM in situ exposure and analysis at 400 degrees C. The samples were also characterized by XRD, SEM/EDX and FIB. The present study shows the corrosive nature of KCl towards the low alloyed steel. It is concluded that the initial KCl distribution is important and that a KCl/FeCl2 liquid phase film forms on large parts of the oxide surface in the presence of KCl. It is proposed that Cl increases the oxidation rate (by decorating oxide grain boundaries) and decreases the oxide scale adhesion. (C) 2011 Elsevier Ltd. All rights reserved.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- biomass
- Low alloy steel
- chromium
- 600-degrees-c
- fired boilers
- SEM
- Chlorination
- alloy sanicro 28
- XRD
- High temperature corrosion
- diffusion
- nickel
- oxidizing atmospheres
- iron oxidation
- fe
Publication and Content Type
- art (subject category)
- ref (subject category)
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