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Nanocrystalline Ele...
Nanocrystalline Electrodeposited Fe-W/Al2O3 Composites: Effect of Alumina Sub-microparticles on the Mechanical, Tribological, and Corrosion Properties
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- Nicolenco, Aliona (author)
- Vilniaus universitetas,Vilnius University
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- Mulone, Antonio, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Imaz, Naroa (author)
- Fundacion CIDETEC
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- Tsyntsaru, Natalia (author)
- Vilniaus universitetas,Vilnius University
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- Sort, Jordi (author)
- Universitat Autonoma de Barcelona (UAB)
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- Pellicer, Eva (author)
- Universitat Autonoma de Barcelona (UAB)
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- Klement, Uta, 1962 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Cesiulis, Henrikas (author)
- Vilniaus universitetas,Vilnius University
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- Garcia-Lecina, Eva (author)
- Fundacion CIDETEC
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(creator_code:org_t)
- 2019-04-16
- 2019
- English.
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In: Frontiers in Chemistry. - : Frontiers Media SA. - 2296-2646. ; 7:MAR, s. 241-
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Abstract
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- In this study, nanocrystalline Fe-Walloy and Fe-W/Al2O3 composite coatings with various contents of sub-microsized alumina particles have been obtained by electrodeposition from an environmentally friendly Fe(III)-based electrolyte with the aim to produce a novel corrosion and wear resistant material. The increase in volume fraction of Al2O3 in deposits from 2 to 12% leads to the grain refinement effect, so that the structure of the coatings change from nanocrystalline to amorphous-like with grain sizes below 20 nm. Nevertheless, the addition of particles to the Fe-W matrix does not prevent the development of a columnar structure revealed for all the types of studied coatings. The observed reduction in both hardness and elastic modulus of the Fe-W/Al2O3 composites is attributed to the apparent grain size refinement/amorphization and the nanoporosity surrounding the embedded Al2O3 particles. In the presence of 12 vol% of Al2O3 in deposits, the wear rate decreases by a factor of 10 as compared to Fe- W alloy tested under dry friction conditions due to the lowering of tribo-oxidation. The addition of alumina particles slightly increases the corrosion resistance of the coatings; however, the corrosion in neutral chloride solution occurs through the preferential dissolution of Fe from the matrix. The obtained results provide a possibility to integrate the nanocrystalline Fe-W/Al2O3 composite coatings into various systems working under dry friction conditions, for example, in high-temperature vacuum systems.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (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 -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Keyword
- alumina
- wear resistance
- iron alloys
- columnar growth
- composite coatings
Publication and Content Type
- art (subject category)
- ref (subject category)
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Nicolenco, Alion ...
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Mulone, Antonio, ...
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Imaz, Naroa
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Tsyntsaru, Natal ...
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Sort, Jordi
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Pellicer, Eva
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Klement, Uta, 19 ...
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Cesiulis, Henrik ...
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Garcia-Lecina, E ...
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Chalmers University of Technology