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Development of yttria-stabilized zirconia and graphene coatings obtained by suspension plasma spraying: Thermal stability and influence on mechanical properties
Chalmers University of Technology, Department of Industrial and Materials Science, Gothenburg (SWE).
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (KAMPT)ORCID iD: 0000-0003-2475-9284
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (KAMPT)ORCID iD: 0000-0003-1732-6544
GKN Aerospace Engines Sweden, Trollhättan (SWE).
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2023 (English)In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 49, no 6, p. 9000-9009Article in journal (Refereed) Published
Abstract [en]

This study investigated the feasibility of depositing graphene nanoplatelet (GNP)-reinforced yttria-stabilized zirconia (YSZ) composite coatings. The coatings were deposited from an ethanol-based mixed YSZ and GNP suspension using suspension plasma spraying (SPS). Raman spectroscopy confirmed the presence of GNPs in the YSZ matrix, and scanning electron microscopy (SEM) analysis revealed a desired columnar microstructure with GNPs distributed predominantly in the inter-columnar spacing of the YSZ matrix. The as-deposited YSZ-GNP coatings were subjected to different isothermal treatments—400, 500, and 600 °C for 8 h—to study the thermal stability of the GNPs in the composite coatings. Raman analysis showed the retention of GNPs in specimens exposed to temperatures up to 500 °C, although the defect concentration in the graphitic structure increased with increasing temperature. Only a marginal effect on the mechanical properties (i.e., hardness and fracture toughness) was observed for the isothermally treated coatings. 

Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 49, no 6, p. 9000-9009
Keywords [en]
Composite coatings; Fracture toughness; Graphene; Isotherms; Plasma jets; Plasma spraying; Plasma stability; Scanning electron microscopy; Thermodynamic stability; Yttria stabilized zirconia; Yttrium oxide; Electron microscopy analysis; Graphene coatings; Graphene nanoplatelets; Raman; Suspension plasma spraying; Suspension plasma sprays; Yttria stabilized zirconia coatings; Yttria-stabilized-zirconia; Zirconia composite coatings; Zirconia matrix; Microstructure
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-19433DOI: 10.1016/j.ceramint.2022.11.055ISI: 000965427300001Scopus ID: 2-s2.0-85141532957OAI: oai:DiVA.org:hv-19433DiVA, id: diva2:1729972
Note

This is an open access article under the CC BY 4.0 license.

The authors would like to acknowledge the national Strategic Innovation Programme for graphene, SIO Grafen, for the financial support received. The programme is supported by the Swedish government agencies Vinnova (Sweden’s Innovation Agency), the Swedish Energy Agency and the Swedish Research Council Formas. The project grant nr.Is Dnr 2018–03315

Available from: 2023-01-23 Created: 2023-01-23 Last updated: 2024-01-05Bibliographically approved

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Mahade, SatyapalBjörklund, StefanJoshi, Shrikant V.

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