Article (Scientific journals)
Replacing Toxic Hard Chrome Coatings: Exploring the Tribocorrosion Behaviour of Electroless Nickel-Boron Coatings
Yunacti, Müslüm; Vitry, Véronique; Montagne, Alex et al.
2023In Coatings, 13 (12), p. 2046
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Keywords :
electroless nickel-boron coatings; friction coefficient; open circuit potential; tribocorrosion; wear mechanism; Surfaces and Interfaces; Surfaces, Coatings and Films; Materials Chemistry
Abstract :
[en] Electroless nickel-boron coatings present outstanding properties such as high hardness, excellent wear resistance and uniform coating, and thus they are considered to be alternative to toxic hard chrome coatings. However, they contain lead that is toxic and used as stabilizer in the plating bath. This study aims to investigate the tribocorrosion behaviour of lead-free electroless nickel-boron coatings. In the present research, several tests were carried out to investigate the behaviour of these coatings under both dry and tribocorrosion reciprocating sliding wear against alumina balls, at room temperature. The open circuit potential (OCP) method was used to determine the degradation mechanism of the coatings. The results of the tribocorrosion and dry wear tests showed that the performance of coatings was very different from each other. A steady state for the coefficient of friction (COF) is achieved during the tribocorrosion test, whereas the constant production of debris and their presence in the contact implied an increase in COF with distance during the dry wear test. The wear mechanisms of these coatings also presented variations in these tests. It was found that the wear area calculated from tribocorrosion is lower (56 µm2) than the one from dry sliding test (86 µm2).
Disciplines :
Materials science & engineering
Author, co-author :
Yunacti, Müslüm ;  Université de Mons - UMONS > Faculté Polytechniqu > Service de Métallurgie
Vitry, Véronique  ;  Université de Mons - UMONS > Faculté Polytechniqu > Service de Métallurgie
Montagne, Alex;  LamiH UMR 8201, CNRS, Université Polytechnique Hauts-de-France, Valenciennes, France
Staia, Mariana Henriette;  School of Metallurgical Engineering and Material Science, Faculty of Engineering, Universidad Central de Venezuela, Los Chaguaramos, Caracas, Venezuela ; Venezuelan National Academy for Engineering and Habitat, Palacio de las Academias, Caracas, Venezuela
Language :
English
Title :
Replacing Toxic Hard Chrome Coatings: Exploring the Tribocorrosion Behaviour of Electroless Nickel-Boron Coatings
Publication date :
December 2023
Journal title :
Coatings
eISSN :
2079-6412
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI)
Volume :
13
Issue :
12
Pages :
2046
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
F601 - Métallurgie
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funders :
INTERREG VA program
European Regional Development Fund (FEDER) in the framework of the AltCtrlTrans project
Funding text :
The authors gratefully acknowledge INTERREG for funding. The authors also would like to thank Yoann Paint from Materia Nova for his help with the analysis of the samples by SEM. Morphlogical datasets and related data analysis are provided by the Morphomeca platform and are managed by LAMIH UMR CNRS 8201, National Institute of Applied Science (INSA), Polytechnic University of Hauts-de-France, Le Mont Houy, Valenciennes, France.
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