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Tribological properties of amorphous carbon films obtained by electrodeposition from DMF using 2HEAL protic ionic liquid as dopant

Falcade, Tiago and Turq, Viviane and Bonino, Jean-Pierre and Fraga Malfatti, Célia de Tribological properties of amorphous carbon films obtained by electrodeposition from DMF using 2HEAL protic ionic liquid as dopant. (2017) Diamond and Related Materials, 71. 30-37. ISSN 0925-9635

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Official URL: https://doi.org/10.1016/j.diamond.2016.11.014


Amorphous carbon films are widely used for improving the surface mechanical properties of metallic materials, substantially increasing the wear resistance [1,2]. Traditionally this type of film is obtained by vapor phase methods, which, in spite of being in a high technical and scientific development level have been associated with a number of limitations, in particular with regards to the implementation cost and large film production. In this context, electrodeposition shows itself as an alternative to traditional methods: it has low cost and limits the use of complex techniques, which generally require high temperatures and vacuum and cannot be applied for coating on substrate with complex shapes and large dimensions. It is true that the electrodeposition of carbon films also has experimental limitations, such as the limited deposition rate and, therefore, the aim of this work is to investigate the influence of the ionic liquid 2 HydroxyEthylAmine Lactate (2HEAL) in obtaining amorphous carbon films. An improvement in deposition rate by increasing electrolyte conductivity with the addition of ionic liquid is expected. This work is meant to investigate the changes occurring in the films with the addition of ionic liquid, especially from the standpoint of surface mechanical properties such as tribological behavior and interfacial properties. The results show that the addition of the ionic liquid led to change in the structure of the film, resulting in an improvement in the mechanical properties, as observed by reduced friction coefficient. An increase of abraded area of counterface and an increase of elastic work also indicates that behavior. Novelty statement The aim of this study was to obtain carbon films by electrodeposition using 2-HydroxyEthylAmine Lactate doped N,N DiMethylFormamide as electrolyte, in order to increase deposition rate. It will be the first report about the use of ionic liquids as dopants in the electrodeposition of carbon films. In addition, mechanical properties of the obtained films were evaluated and their relationship with the amounts of dopant was explored.

Item Type:Article
HAL Id:hal-02390350
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Universidade Federal do Rio Grande do Sul - UFRGS (BRAZIL)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:03 Dec 2019 08:01

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