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Journal of Thermal Spray Technology

, Volume 16, Issue 5–6, pp 661–668 | Cite as

Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

  • Eric Irissou
  • Jean-Gabriel Legoux
  • Bernard Arsenault
  • Christian Moreau
Peer Reviewed

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.

Keywords

abrasion resistance corrosion protection gas dynamic spray low-pressure cold spray metal-ceramic mixture 

Notes

Acknowledgment

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

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Copyright information

© ASM International 2007

Authors and Affiliations

  • Eric Irissou
    • 1
  • Jean-Gabriel Legoux
    • 1
  • Bernard Arsenault
    • 1
  • Christian Moreau
    • 1
  1. 1.National Research Council Canada – Industrial Materials InstituteBouchervilleCanada

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