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HVAF thermal spray Fe-based coating: An environmentally acceptable alternative to cobalt-based coating
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: 0000-0002-9578-4076
University West, Department of Engineering Science, Division of Production Engineering. (PTW)ORCID iD: 0000-0001-7787-5444
2015 (English)Conference paper, Presentation (Refereed)
Abstract [en]

Fe-based coatings were widely used in the corrosive environment of various indus-tries. It was replacing expensive cobalt-based alloys, which face a ban in the future due to serious health and environmental risks. The aim of the present work was to compare low temperature corrosion behavior of some Fe- and Co-based coatings produced by High-Velocity Air Fuel (HVAF) thermal spraying. Polarization and elec-trochemical impedance spectroscopy (EIS) tests were carried out in 3.5 wt.% NaCl solution at 25°C. The microstructures were analyzed using optical microscopy (OM) and scanning electron microscopy (SEM) to characterize the morphologies of both Fe- and Co-based coatings and analyze the exposed products along the surface and cross-section of specimens. The results revealed that the high-chromium Fe-based coating protected the underlying substrate better than Co-based coating.

Place, publisher, year, edition, pages
2015.
Keyword [en]
Thermal spray, coatings
National Category
Production Engineering, Human Work Science and Ergonomics Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-8899OAI: oai:DiVA.org:hv-8899DiVA: diva2:894990
Conference
EUROCORR 2015,EUROPEAN CORROSION CONGRESS 6-10 September 2015 Graz / Austria The annual event of the European Federation of Corrosion
Available from: 2016-01-18 Created: 2016-01-18 Last updated: 2016-02-11Bibliographically approved

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Sadeghimeresht, EsmaeilMarkocsan, NicolaieNylén, Per
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Production Engineering, Human Work Science and ErgonomicsManufacturing, Surface and Joining Technology

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ReferencesLink to record
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