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Internal Diameter HVAF Spraying for Wear and Corrosion Applications
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: 0000-0003-1181-0415
2015 (English)In: Journal of thermal spray technology (Print), ISSN 1059-9630, E-ISSN 1544-1016, Vol. 24, no 1-2, p. 235-243Article in journal (Refereed) Published
Abstract [en]

Electrolytic hard chrome (EHC) methods are still widely utilized in the printing, automotive and off-shore industries. Alternative methods to EHC have been widely developed in the past decade by conventional HVOF processes and more recently HVAF systems, which are processing at higher kinetic energy and more particularly at lower temperature, significantly increasing wear and corrosion resistance properties. A dedicated internal diameter HVAF system is here presented, and coatings characteristics are compared to the one obtained by standard HVAF coatings. Specially R&D designed fixtures with inside bore of 200 mm have been manufactured for this purpose, with a possibility to spray samples at increasing depth up to 400 mm while simulating closed bottom bore spraying. WC-based and Cr3C2-based powder feedstock materials have been deposited onto high-strength steel substrates. Respective coating microstructures, thermally induced stresses and corrosion resistance are discussed for further optimization of coating performances. The fact that the ID-HVAF system is utilized both for spraying and gritblasting procedures is also given a particular interest.

Place, publisher, year, edition, pages
2015. Vol. 24, no 1-2, p. 235-243
Keywords [en]
cermet; grit blasting, HVAF, inner diameter HVAF
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-7054DOI: 10.1007/s11666-014-0195-xISI: 000347416800028OAI: oai:DiVA.org:hv-7054DiVA, id: diva2:767583
Conference
2014 International Thermal Spray Conference, held May 21-23, 2014, in Barcelona, Spain,
Note

This article is an invited paper selected from presentations at the 2014 International Thermal Spray Conference, held May 21-23, 2014, in Barcelona, Spain, and has been expanded from the original presentation.

Available from: 2014-12-01 Created: 2014-12-01 Last updated: 2017-12-05Bibliographically approved

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Lyphout, ChristopheBjörklund, Stefan

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