Abstract
In this study, an investigation on the effects of interactions between copper particles on coating formation was conducted by using a finite element analysis method to clarify the bonding mechanism in cold spraying. The predicted results reveal that the interactions between particles significantly affect the particle deformation and thus coating formation. When the initial parallel distance between particles is short, particles compress with the generation of gap between them. For the vertical case, the initial distance between particles also has an important effect. Short vertical distance makes the subsequent incident particle deform so weakly that the bonding performance is probably not strong enough to form a coating. Furthermore, for successive impacting particles, the subsequent incident particles will tamp the former deposited particles, causing the coating to be little porous near the surface and denser inside the coating.
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The authors would like to acknowledge the financial support by the National Natural Science Foundation of China (No. 50476075).
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Yin, S., Wang, Xf., Li, Wy. et al. Numerical Investigation on Effects of Interactions Between Particles on Coating Formation in Cold Spraying. J Therm Spray Tech 18, 686–693 (2009). https://doi.org/10.1007/s11666-009-9390-6
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DOI: https://doi.org/10.1007/s11666-009-9390-6