University of Oulu

arco Freschi, Matteo Di Virgilio, Oskari Haiko, Marco Mariani, Luca Andena, Nora Lecis, Jukka Kömi, Giovanni Dotelli, Investigation of second phase concentration effects on tribological and electrical properties of Cu–WS2 composites, Tribology International, Volume 166, 2022, 107357, ISSN 0301-679X, https://doi.org/10.1016/j.triboint.2021.107357

Investigation of second phase concentration effects on tribological and electrical properties of Cu–WS₂ composites

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Author: Freschi, Marco1; Di Virgilio, Matteo1; Haiko, Oskari2;
Organizations: 1Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy
2Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, Pentti Kaiteran katu 1, 90570 Oulu, Finland
3Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milano, Italy
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2021113057922
Language: English
Published: Elsevier, 2021
Publish Date: 2023-11-22
Description:

Abstract

In this preliminary study, a set of self-lubricating copper-tungsten disulfide (Cu-WS₂) composites are prepared via a powder metallurgy route to analyze the effects of solid lubricant concentration on their tribological, electrical and wettability properties. An extensive characterization is performed to preliminarily assess the potential application of these metal matrix composites (MMCs) in sliding electrical contacts working under harsh conditions. The experimental results reveal the beneficial effect of WS₂ on the wear behavior of the prepared composites, as demonstrated by friction coefficient, specific wear rate and wear coefficients results. A second phase content in the 10–15 wt% range appears to guarantee the better combination of the desired features.

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Series: Tribology international
ISSN: 0301-679X
ISSN-E: 1879-2464
ISSN-L: 0301-679X
Volume: 166
Article number: 107357
DOI: 10.1016/j.triboint.2021.107357
OADOI: https://oadoi.org/10.1016/j.triboint.2021.107357
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Funding: The authors would like to thank the European Institute of Innovation and Technology (EIT) RawMaterials (Berlin, Germany) that funded this work within the project ADMA2 – Practical training between Academia and Industry during doctoral studies (Grant ID: 18252), Logic S.p.A. for the supply of materials and instruments, and Eng. Alessia Arrigoni of the Functional and Nanostructured Materials (FuNMat) laboratory, Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, for the useful help in the acquisition and interpretation of Raman scattering spectra.
Copyright information: © 2021 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
  https://creativecommons.org/licenses/by-nc-nd/4.0/