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Comparative Study of the Corrosion and Cavitation Resistance of HVOF and HVAF FeCrMnSiNi and FeCrMnSiB Coatings
Federal University of Technology - Parana, Post-graduate Program in Mechanical Engineering, Ponta Grossa, PR, Brazil.
Federal University of Technology - Parana, Post-graduate Program in Mechanical Engineering, Ponta Grossa, PR, Brazil.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0001-7787-5444
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2017 (English)In: Proceedings of the International Thermal Spray Conference & Exposition (ITSC 2017), New York: Curran Associates, Inc , 2017, Vol. 2, p. 675-680Conference paper, Published paper (Refereed)
Abstract [en]

Cavitation and corrosion on hydrodynamic components and systems reduces the operational efficiency. The use of wear resistant coatings have been studied as a solution to the problem of corrosion and cavitation in the industrial environment. Thermal spray processes are recognized as excellent technique to deposit coatings. The high velocity oxy-fuel process (HVOF) can produce high density and bond strength coatings. High velocity air-fuel process (HVAF) is an alternative process, shown to be superior regarding corrosion protection and production costs. HVAF can deposit coating with shorter dwell time and lower temperature, producing coating with lower oxide content This paper presents the use of HVOF and HVAF process to deposit FeCrMnSiNi and FeCrMnSiB coatings, studying the resistance against corrosion and cavitation in comparison to 316L HVOF coating. Microstructure was analyzed by XRD, microscopic means and mechanical testing. Cavitation and corrosion behavior of the coatings were also studied comparatively. HVAF coatings presented lower porosity and oxide levels, as well as higher hardness values, compared with the coatings deposited by HVOF process. The HVAF process presented better cavitation resistance than HVOF coatings. The FeCrMnSiNi HVAF coating had the best corrosion protection performance between the developed alloys. 

Place, publisher, year, edition, pages
New York: Curran Associates, Inc , 2017. Vol. 2, p. 675-680
Keywords [en]
Air, Boron, Cavitation, Corrosion resistance, Corrosive effects, Deposits, Fuels, HVOF thermal spraying, Iron alloys, Mechanical testing, Protective coatings, Sprayed coatings, Thermal spraying, Corrosion protection performance, Fe-based alloys, High velocity air fuels, High velocity oxy-fuel process (HVOF), Hydrodynamic component, Industrial environments, Operational efficiencies, Wear-resistant coating, Corrosion resistant coatings
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-13055Scopus ID: 2-s2.0-85047484038ISBN: 9781510858220 (print)OAI: oai:DiVA.org:hv-13055DiVA, id: diva2:1259249
Conference
International Thermal Spray Conference and Exposition, ITSC 2017, Dusseldorf, Germany, 7-9 June, 2017
Available from: 2018-10-29 Created: 2018-10-29 Last updated: 2019-01-10Bibliographically approved

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Björklund, StefanNylén, Per

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