Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Incorporation of graphene nano platelets in suspension plasma sprayed alumina coatings for improved tribological properties
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0003-2475-9284
Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg (SWE).
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)
Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg (SWE).
Show others and affiliations
2021 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 570, article id 151227Article in journal (Refereed) Published
Abstract [en]

Graphene possesses high fracture toughness and excellent lubrication properties, which can be exploited to enhance tribological performance of coating systems utilized to combat wear. In this work, suspension plasma spray (SPS) process was employed to deposit a composite, graphene nano-platelets (GNP) incorporated alumina coating. For comparison, monolithic alumina was also deposited utilizing identical spray conditions. The as-deposited coatings were characterized in detail for their microstructure, porosity content, hardness, fracture toughness and phase composition. Raman analysis of the as-deposited composite coating confirmed retention of GNP. The composite coating also showed good microstructural integrity, comparable porosity, higher fracture toughness and similar alumina phase composition as the monolithic alumina coating. The as-deposited coatings were subjected to dry sliding wear tests. The GNP incorporated composite coating showed lower CoF and lower specific wear rate than the pure alumina coating. Additionally, the counter surface also showed a lower wear rate in case of the composite coating. Post-wear analysis performed by SEM/EDS showed differences in the coating wear track and in the ball wear track of monolithic and composite coatings. Furthermore, Raman analysis in the wear track of composite coating confirmed the presence of GNP. The micro-indentation and wear test results indicate that the presence of GNP in the composite coating aided in improving fracture toughness, lowering CoF and specific wear rate compared to the monolithic coating. Results from this work demonstrated retention of GNP in an SPS processed coating, which can be further exploited to design superior wear-resistant coatings. 

Place, publisher, year, edition, pages
Elsevier B.V. , 2021. Vol. 570, article id 151227
Keywords [en]
Alumina; Composite coatings; Fracture toughness; Graphene; Phase composition; Plasma jets; Plasma spraying; Platelets; Porosity; Sprayed coatings; Tribology; Wear of materials, Alumina coating; Composites coating; Deposited coatings; Dry sliding wear test; Graphene nano-platelet; Monolithic alumina; Nanoplatelet; Raman analysis; Suspension plasma sprays; Wear tracks, Aluminum oxide
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-17510DOI: 10.1016/j.apsusc.2021.151227ISI: 000724554400007Scopus ID: 2-s2.0-85114835136OAI: oai:DiVA.org:hv-17510DiVA, id: diva2:1599213
Funder
Vinnova
Note

The authors gratefully acknowledge financial support received from the national Strategic Innovation Programme for graphene, SIO Grafen, supporting the industrial graphene development in Sweden. 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. We also thank Mr. Sven Forsberg, 2DFab AB, Sweden, for providing the water-based GNP suspension.

Available from: 2021-09-30 Created: 2021-09-30 Last updated: 2022-04-04Bibliographically approved

Open Access in DiVA

Applied Surface Science(15090 kB)188 downloads
File information
File name FULLTEXT01.pdfFile size 15090 kBChecksum SHA-512
1b0f70a8f4090b08bdb1605fce2755732753248078906c4392da822e92687742358fb5fa3a5850fbd72c1074c280004cb89f61fd09c8c539ec78e9a3a426edf3
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Authority records

Mahade, SatyapalBjörklund, StefanJoshi, Shrikant V.

Search in DiVA

By author/editor
Mahade, SatyapalBjörklund, StefanJoshi, Shrikant V.
By organisation
Division of Subtractive and Additive ManufacturingResearch Enviroment Production Technology West
In the same journal
Applied Surface Science
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 189 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 132 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf