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Interplay of water ...
Interplay of water and reactive elements in oxidation of alumina-forming alloys
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- Mortazavi Seyedeh, Nooshin, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Geers, Christine, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Esmaily, Mohsen, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Babic, Vedad, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sattari, Mohammad, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lindgren, Kristina, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Malmberg, Per, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jönsson, Bo, 1956 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Halvarsson, Mats, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Jan-Erik, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Panas, Itai, 1959 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Lars-Gunnar, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2018-06-11
- 2018
- English.
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In: Nature Materials. - : Springer Science and Business Media LLC. - 1476-4660 .- 1476-1122. ; 17:7, s. 610-617
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Abstract
Subject headings
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- High-temperature alloys are crucial to many important technologies that underpin our civilization. All these materials rely on forming an external oxide layer (scale) for corrosion protection. Despite decades of research on oxide scale growth, many open questions remain, including the crucial role of the so-called reactive elements and water. Here, we reveal the hitherto unknown interplay between reactive elements and water during alumina scale growth, causing a metastable ‘messy’ nano-structured alumina layer to form. We propose that reactive-element-decorated, hydroxylated interfaces between alumina nanograins enable water to access an inner cathode in the bottom of the scale, at odds with the established scale growth scenario. As evidence, hydride-nanodomains and reactive element/hydrogen (deuterium) co-variation are observed in the alumina scale. The defectrich alumina subsequently recrystallizes to form a protective scale. First-principles modelling is also performed to validate the RE effect. Our findings open up promising avenues in oxidation research and suggest ways to improve alloy properties.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Korrosionsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
Keyword
- Corrosion protection
- Alumina
- Aluminum oxide
- Alloy properties
- Alumina layers
- Scale (deposits)
Publication and Content Type
- art (subject category)
- ref (subject category)
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Mortazavi Seyede ...
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Geers, Christine ...
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Esmaily, Mohsen, ...
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Babic, Vedad, 19 ...
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Sattari, Mohamma ...
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Lindgren, Kristi ...
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show more...
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Malmberg, Per, 1 ...
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Jönsson, Bo, 195 ...
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Halvarsson, Mats ...
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Svensson, Jan-Er ...
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Panas, Itai, 195 ...
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Johansson, Lars- ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Other Materials ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Metallurgy and M ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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and Corrosion Engine ...
- Articles in the publication
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Nature Materials
- By the university
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Chalmers University of Technology