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Cold-Sprayed Cu-MoS2 and Its Fretting Wear Behavior

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Abstract

Cu and Cu-MoS2 coatings were fabricated by cold spray, and the fretting wear performance of the two coatings was compared. A mixture (95 wt.% Cu + 5 wt.% MoS2) was used as feedstock for the composite coating. Coatings were sprayed with identical gas flow conditions on the substrates pre-heated to approximately 170 °C. The morphology of coating top surface and polished cross sections was analyzed by scanning electron microscopy (SEM) and light optical microscopy (LOM). The influence of MoS2 on Cu deposition was examined. The local MoS2 concentration within the coating was found to affect the hardness. Fretting tests were carried out at two different normal loads, and the influence of MoS2 on friction and wear was studied. The morphology and elemental compositions of the wear scars and wear debris were observed by SEM and energy dispersive x-ray spectroscopy (EDS), respectively.

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Acknowledgments

The authors gratefully acknowledge the financial support from Natural Sciences and Engineering Research Council (NSERC) of Canada. They gratefully acknowledge help from Lisa Lee for data analysis, Walker Nickerson for sample preparation, Lionel Lafarge (INSA-Lyon) for the design of the fretting device, Edouard Régis (INSA-Lyon) for technical help, and Tekna Plasma Systems Inc. for donation of the powder. The authors acknowledge administrative support from Drs. Eric Irissou and Jean-Gabriel Legoux (the NRC) and Stephen Yue (McGill University) and technical support from Mr. Jean Francois Alarie at the McGill Aerospace Materials and Alloy Design Center (MAMADC) cold spray facility.

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Authors and Affiliations

  1. Department of Mining and Materials Engineering, McGill University, Montreal, QC, H3A 0C5, Canada

    Yinyin Zhang & Richard R. Chromik

  2. Université de Lyon, CNRS, INSA-Lyon, LaMCoS, UMR5259, 69621, Villeurbanne, France

    Sylvie Descartes

  3. National Research Council Canada, 75, boul. de Mortagne, Boucherville, QC, J4B 6Y4, Canada

    Phuong Vo

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  1. Yinyin Zhang
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  2. Sylvie Descartes
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  3. Phuong Vo
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  4. Richard R. Chromik
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Correspondence to Richard R. Chromik.

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Zhang, Y., Descartes, S., Vo, P. et al. Cold-Sprayed Cu-MoS2 and Its Fretting Wear Behavior. J Therm Spray Tech 25, 473–482 (2016). https://doi.org/10.1007/s11666-015-0372-6

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  • DOI: https://doi.org/10.1007/s11666-015-0372-6

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