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Coatings 2019, 9(3), 171; https://doi.org/10.3390/coatings9030171

A Facile Approach to Deposit Graphenaceous Composite Coatings by Suspension Plasma Spraying

1
Department of Process Engineering, Research and Technology, GKN Aerospace Engine Systems, 46181 Trollhättan, Sweden
2
Department of Engineering Science, University West, 46186 Trollhättan, Sweden
3
Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Gothenburg, Sweden
4
School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad 500046, India
*
Author to whom correspondence should be addressed.
Received: 19 January 2019 / Revised: 24 February 2019 / Accepted: 27 February 2019 / Published: 5 March 2019
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Abstract

This paper demonstrates, for the first time ever, the deposition of graphenaceous composite coatings using an easy, yet robust, suspension plasma spraying (SPS) process. As a case study, a composite coating comprising 8 wt.% of yttria-stabilized-zirconia (8YSZ) and reinforced with graphene oxide (GO) was deposited on a steel substrate. The coatings were sprayed using an 8YSZ-GO mixed suspension with varied plasma spray parameters. Establishing the possibility of retaining the graphene in a ceramic matrix using SPS was of specific interest. Electron microscopy and Raman spectroscopy confirmed the presence of graphenaceous material distributed throughout the coating in the 8YSZ matrix. The experimental results discussed in this work confirm that SPS is an immensely attractive pathway to incorporate a graphenaceous material into virtually any matrix material and can potentially have major implications in enabling the deposition of large-area graphene-containing coatings for diverse functional applications. View Full-Text
Keywords: graphene; suspension plasma spray; yttria-stabilized-zirconia; ceramic composites; Raman; coating graphene; suspension plasma spray; yttria-stabilized-zirconia; ceramic composites; Raman; coating
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Ganvir, A.; Björklund, S.; Yao, Y.; V. S. S. Vadali, S.; Klement, U.; Joshi, S. A Facile Approach to Deposit Graphenaceous Composite Coatings by Suspension Plasma Spraying. Coatings 2019, 9, 171.

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