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Corrosion behavior of HVAF- and HVOF-sprayed high-chromium Fe-based coatings
National School of Engineers, University of Limoges, Limoges, 87280, France.
University West, Department of Engineering Science, Division of Manufacturing Processes. (PTW)ORCID iD: 0000-0002-7663-9631
University West, Department of Engineering Science, Division of Manufacturing Processes. (PTW)ORCID iD: 0000-0002-6929-3310
University West, Department of Engineering Science, Division of Manufacturing Processes. (PTW)ORCID iD: 0000-0002-9578-4076
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2015 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Fe-based coatings with three particular elemental compositions and two different powder particle size were prepared by high-velocity air fuel (HVAF) and high-velocity oxy fuel (HVOF) techniques. The corrosion behavior of which were comparatively studied in 3.5 wt.% NaCl solution. The results indicated that the coatings produced by HVAF process exhibited denser structure with lower porosity. Polarization and electrochemical impedance spectroscopy (EIS) tests indicated that the HVAF coatings provided better corrosion resistance than the HVOF coatings. The presence of defects was significant in HVOF coatings. The investigation illustrated that the corrosion paths initiated and grow through defects of the coating. Furthermore, adding Cr strongly improved the corrosion resistance of the coatings. The results confirmed that the cheap HVAF process could be a potential alternative to HVOF to fabricate Fe-based coatings for industrial applications.

Place, publisher, year, edition, pages
2015.
Keyword [en]
Fe-based coatings, corrosion
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-8898OAI: oai:DiVA.org:hv-8898DiVA: diva2:894987
Conference
7th Rencontres Internationales sur la Projection Thermique, 9th to 11th December 2015 – Limoges, France
Available from: 2016-01-18 Created: 2016-01-18 Last updated: 2016-02-11Bibliographically approved

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Sadeghimeresht, EsmaeilLyphout, ChristopheMarkocsan, NicolaieNylén, Per

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CiteExportLink to record
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Citation style
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