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Corrosion behavior of high-chromium Fe-based coatings produced by HVAF thermal spraying technique
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
Höganäs AB, Höganäs.
2015 (English)Conference paper, (Refereed)
Abstract [en]

Fe-based coatings with different Cr content were prepared by high-velocity air fuel (HVAF) spraying on the surface of both carbon steel and stainless steel 304L. The corrosion behavior of the coatings were evaluated using polarization and electrochemical impedance spectroscopy (EIS) techniques in 3.5 wt.% NaCl solution. Microstructure of the coatings were evaluated by X-ray diffraction (XRD), optical microscopy (OM), scanning election microscopy (SEM), and Energy-dispersive X-ray spectroscopy (EDS) before and after corrosion testing. The experimental results indicated that Cr strongly increased the corrosion resistance of the coating. Furthermore, having an elemental composition closer to that of the substrate, the coatings showed lower susceptibility to galvanic corrosion, accordingly lower corrosion rate.

Place, publisher, year, edition, pages
2015.
Keyword [en]
Corrosion, thermal spraying technique
National Category
Production Engineering, Human Work Science and Ergonomics Manufacturing, Surface and Joining Technology
Research subject
Production Technology; ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-8897OAI: oai:DiVA.org:hv-8897DiVA: diva2:894984
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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