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Velocity of the Particles Accelerated by a Cold Spray Micronozzle: Experimental Measurements and Numerical Simulation

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Abstract

In the current study, velocities of aluminum, zinc, and copper particles accelerated in an axisymmetric cold spray micronozzle are numerically simulated and experimentally measured. It is found that aluminum and zinc particles can be accelerated to velocities close to the critical values in a supersonic nozzle with 1-mm exit diameter, 0.5-mm throat diameter, and 20-mm length when helium is used as the process gas. The diameter of the particle jet delivered by the micronozzle does not exceed 1.3 mm for any of the types of the tested powders.

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Acknowledgments

The researches were supported by a grant delivered in the framework of decree No. 220 of the Russian Federation government.

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Authors and Affiliations

  1. ENISE/DIPI, University of Lyon, Saint-Etienne, France

    Aleksey Sova & Igor Smurov

  2. MSTU Stankin, Moscow, Russia

    Anna Okunkova & Sergei Grigoriev

Authors
  1. Aleksey Sova
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  2. Anna Okunkova
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  3. Sergei Grigoriev
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  4. Igor Smurov
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Correspondence to Aleksey Sova.

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Sova, A., Okunkova, A., Grigoriev, S. et al. Velocity of the Particles Accelerated by a Cold Spray Micronozzle: Experimental Measurements and Numerical Simulation. J Therm Spray Tech 22, 75–80 (2013). https://doi.org/10.1007/s11666-012-9846-y

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  • DOI: https://doi.org/10.1007/s11666-012-9846-y

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