Microstructure and wear behaviour of powder and suspension hybrid Al2O3–YSZ coatings

Murray, James W. and Leva, Alessandro and Joshi, Shrikant and Hussain, Tanvir (2018) Microstructure and wear behaviour of powder and suspension hybrid Al2O3–YSZ coatings. Ceramics International . ISSN 1873-3956

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Abstract

Suspension based plasma sprayed coatings can yield superior microstructural and tribological properties compared to conventional powder based plasma sprayed coatings. This study investigates a new hybrid method, using simultaneous spraying from powder and suspension, to produce composite coatings using alumina and yttria stabilised zirconia (YSZ), with potentially excellent wear and thermal properties. Dry sliding wear showed the alumina suspension-YSZ suspension coating yielded half the specific wear rate of the alumina powder-YSZ suspension, explained by preferential gamma alumina formation and increased porosity in the latter. Both YSZ-containing samples showed superior toughness and wear rate than simple alumina powder and suspension coatings.

Item Type: Article
Keywords: A suspensions; B composites; C wear resistance; D Al2O3
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: https://doi.org/10.1016/j.ceramint.2018.02.048
Depositing User: Eprints, Support
Date Deposited: 09 Feb 2018 09:47
Last Modified: 02 Jul 2018 09:18
URI: http://eprints.nottingham.ac.uk/id/eprint/49688

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