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Carbide-laden coatings deposited using a hand-held high-velocity air-fuel (HVAF) spray gun
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. LIMS, INSTM Reference Laboratory for Engineering of Surface reatments, Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Rome, ITA. (PTW)
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)
Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg.
Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg.
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2021 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 406, article id 126725Article in journal (Refereed) Published
Abstract [en]

Driven by sustainability and cost considerations, there is growing interest in power generation utilizing renewable sources, especially biomass and waste. While premature degradation of power plant components due to corrosion is well-known, erosion can be a dominant damage mechanism in plants that use “pure” biomass with less corrosive elements like Cl, K, etc. Circulating fluidized bed (CFB) parts are prone to erosion-driven damage and demand periodic re-protection or replacement. In response to the above, this preliminary study evaluates a selection of complex carbide-based coatings to enhance protection against erosion to prolong service life of boiler components. Recognizing on-site coating requirements of real boiler applications, a specific focus is on evaluating performance of a hand-held high-velocity air-fuel (HVAF) spray gun and compare it with the current state-of-the-art high-velocity oxy-fuel (HVOF) deposition. Coatings developed by the above routes have been characterized with microstructural analyses, and their performance evaluated and ranked in an air-jet erosion rig at various impact angles.

Place, publisher, year, edition, pages
2021. Vol. 406, article id 126725
Keywords [en]
Hand-held HVAF, Cermet, Chromium carbide, HVOF, Dry particle erosion, Microstructural characterization
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-16129DOI: 10.1016/j.surfcoat.2020.126725ISI: 000604750600041Scopus ID: 2-s2.0-85097868101OAI: oai:DiVA.org:hv-16129DiVA, id: diva2:1510875
Available from: 2020-12-17 Created: 2020-12-17 Last updated: 2022-04-01Bibliographically approved

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Baiamonte, LidiaBjörklund, StefanJoshi, Shrikant V.

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