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Tribological performance assessment of Al2O3-YSZ composite coatings deposited by hybrid powder-suspension plasma spraying
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0003-1897-0171
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0001-5676-7903
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), 500005 Hyderabad (IND).
University West, Department of Engineering Science.
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2021 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 409, p. 1-13, article id 126907Article in journal (Refereed) Published
Abstract [en]

The advent of high-throughput plasma spray systems that allow axial feeding encourages the study of using liquid feedstock for various next-generation functional applications. The current study explores the benefit of such a plasma spray system to deposit hybrid powder-suspension Al2O3-YSZ ceramic matrix composite (CMC) coatings for tribological applications. The tribological performance of the hybrid processed CMC coatings was assessed using scratch, ball-on-plate wear and erosion tests and compared with that of monolithic powder-derived Al2O3 coatings. As-deposited and tribo-tested coatings were characterized using Scanning Electron Microscopy, X-ray Diffraction and Energy Dispersive Spectroscopy to analyse their microstructure and phase constitution. The results showed that the tribological performance of the hybrid powder-suspension Al2O3-YSZ CMC coating was significantly improved by enhancing the wear resistance under scratch, dry sliding ball-on-plate and erosion tests as compared to the conventional APS deposited monolithic Al2O3 coating. About 36% decrease in the dry sliding ball-on-plate specific wear rate and up to 50% decrease in the erosion wear rate was noted in the hybrid powder-suspension Al2O3-YSZ CMC coating as compared to the conventional APS deposited monolithic Al2O3 coating. The study concludes that the hybrid powder-suspension route can create CMC coatings with unique multi-length scale microstructures which can be attractive for combining different tribological attributes in the same coating system.

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 409, p. 1-13, article id 126907
Keywords [en]
Hybrid; Axial plasma spray; Suspension; Powder; Tribology; Erosion; Scratch & wear
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-17236DOI: 10.1016/j.surfcoat.2021.126907ISI: 000654045600066Scopus ID: 2-s2.0-85100396405OAI: oai:DiVA.org:hv-17236DiVA, id: diva2:1620701
Funder
Swedish Energy Agency, P46393-1Available from: 2021-12-16 Created: 2021-12-16 Last updated: 2021-12-16

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Ganvir, AshishGoel, SnehaBjörklund, StefanJoshi, Shrikant V.

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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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