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Mechanical Property Mapping of Cold Sprayed Ti Splats and Coatings

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Abstract

Profile nanoindentation and nanoindentation mapping were used to investigate the mechanical properties of commercially pure cold spray Ti splats and coatings deposited at increasing deposition velocities. Three regions in the cold spray Ti splats have been indentified: the impact region, the jetting region, and the upper splat region. The mechanical properties measured in these regions were tied to the cold spray deposition process with help of optical and scanning electron microscopes. The jetting region was observed to contribute to a metallurgical bonding of cold spray splats to cold spray splats and was measured to have low hardness in comparison to the splat impact site and similar to the hardness in the upper splat region. No increase in the profile coatings hardness with increase in the particle in-flight velocity and coating thickness was found. A correlation between the mechanical properties and the presently known deposition temperature, stress and dislocation density models was made.

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Acknowledgments

Financial support from the Canadian Foundation for Innovation is gratefully acknowledged; the cold spray equipment was provided by CFI project No. 8246 while the nanoindentation equipment was provided by CFI, Leader’s Opportunity Fund, project No. 13029. Operational funding for this project was provided by the Natural Sciences and Engineering Research Council (NSERC) Strategic Grants Program. The authors acknowledge the technical assistance of Ahmad Rezaeian, Bernard Harvey and Frederic Belval.

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Authors and Affiliations

  1. Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, QC, H3A 2B2, Canada

    Dina Goldbaum, Richard R. Chromik & Stephen Yue

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

    Eric Irissou & Jean-Gabriel Legoux

Authors
  1. Dina Goldbaum
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  2. Richard R. Chromik
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  3. Stephen Yue
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  4. Eric Irissou
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  5. Jean-Gabriel Legoux
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Correspondence to Richard R. Chromik.

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Goldbaum, D., Chromik, R.R., Yue, S. et al. Mechanical Property Mapping of Cold Sprayed Ti Splats and Coatings. J Therm Spray Tech 20, 486–496 (2011). https://doi.org/10.1007/s11666-010-9546-4

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  • DOI: https://doi.org/10.1007/s11666-010-9546-4

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