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Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

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Coating build-up mechanisms and properties of cold-sprayed aluminum-alumina cermets were investigated using two spherical aluminum powders having average diameters of 36 and 81 μm. Those powders were blended with alumina at several concentrations. Coatings were produced using a commercial low-pressure cold spray system. Powders and coatings were characterized by electronic microscopy and microhardness measurements. In-flight particle velocities were monitored for all powders. The deposition efficiency was measured for all experimental conditions. Coating performance and properties were investigated by performing bond strength test, abrasion test, and corrosion tests, namely, salt spray and alternated immersion in saltwater tests. These coating properties were correlated to the alumina fraction either in the starting powder or in the coating.

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Acknowledgment

The authors acknowledge the technical assistance of J.-F. Alarie, F. Belval, B. Harvey, M. Lamontagne and M. Thibodeau.

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Authors and Affiliations

  1. National Research Council Canada – Industrial Materials Institute, 75 de Mortagne Blvd., Boucherville, QC, Canada, J4B 6Y4

    Eric Irissou, Jean-Gabriel Legoux, Bernard Arsenault & Christian Moreau

Authors
  1. Eric Irissou
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  2. Jean-Gabriel Legoux
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  3. Bernard Arsenault
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  4. Christian Moreau
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Corresponding author

Correspondence to Eric Irissou.

Additional information

This article is an invited paper selected from presentations at the 2007 International Thermal Spray Conference and has been expanded from the original presentation. It is simultaneously published in Global Coating Solutions, Proceedings of the 2007 International Thermal Spray Conference, Beijing, China, May 14-16, 2007, Basil R. Marple, Margaret M. Hyland, Yuk-Chiu Lau, Chang-Jiu Li, Rogerio S. Lima, and Ghislain Montavon, Ed., ASM International, Materials Park, OH, 2007.

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Irissou, E., Legoux, JG., Arsenault, B. et al. Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties. J Therm Spray Tech 16, 661–668 (2007). https://doi.org/10.1007/s11666-007-9086-8

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  • DOI: https://doi.org/10.1007/s11666-007-9086-8

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