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Oxidation studies o...
Oxidation studies of Fe10CrAl-RE alloys exposed to Pb at 550 degrees C for 10,000 h
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- Ejenstam, Jesper (författare)
- KTH,Yt- och korrosionsvetenskap
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- Halvarsson, Mats, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Weidow, Jonathan, 1980 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jonsson, B. (författare)
- Sandvik Group AB
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- Szakalos, Peter (författare)
- KTH,Yt- och korrosionsvetenskap
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- Engelska.
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Ingår i: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 443:1-3, s. 161-170
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Five experimental FeCrAl-RE alloys have been exposed up to 10,000 h in stagnant liquid Pb at 550 C. The test matrix consisted of three 10 wt.% Cr alloys, with an Al content ranging from 4 to 8 wt.% (10Cr-4Al, 10Cr-6Al and 10Cr-8Al), one alloy without additions of reactive elements (RE) (10Cr-6Al), and one reference alloy with 21 wt.% Cr and 5 wt.% Al (21Cr-5Al). The evaluation showed a clear difference in oxidation properties, and it was possible to divide the alloys into two distinct groups. A critical Al concentration in the interval of 4-6 wt.% at the given RE content was required to form a thin protective oxide. However, the absence of RE addition in one of the two 10Cr-6Al alloys resulted in a significant reduction in oxidation resistance, comparable with 10Cr-4Al. None of the alloys were severely corroded, however Pb penetrated to a relatively large extent into the porous oxide of the low performing alloys. A 100 nm thick oxide scale, partly consisting of alumina (Al2O3), was observed for the high performing 10Cr-6Al alloy. The Fe10CrAl-RE alloys showed overall very good corrosion resistance and are hence a promising new alloy category for liquid Pb applications. (C) 2013 Elsevier B.V. All rights reserved.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- corrosion behavior
- kanthal af
- atomic-level
- al alloys
- computer-models
- liquid lead-bismuth
- spinodal decomposition
- high-temperature
- surface-treated steels
- phase-separation
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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