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Modeling the Influence of Injection Modes on the Evolution of Solution Sprays in a Plasma Jet

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Abstract

Solution precursor plasma spraying (SPPS) is a novel technology with great potential for depositing finely structured ceramic coatings with nano- and sub-micrometric features. The solution is injected into the plasma jet either as a liquid stream or gas atomized droplets. Solution droplets or the stream interact with the plasma jet and break up into fine droplets. The solvent vaporizes very fast as the droplets travel downstream. Solid particles are finally formed, and the particle are heated up and accelerated to the substrate to generate the coating. The deposition process and the properties of coatings obtained are extremely sensitive to the process parameters, such as torch operating conditions, injection modes, injection parameters, and substrate temperatures. This article numerically investigates the effect of injection modes, a liquid stream injection and a gas-blast injection, on the size distribution of injected droplets. The particle/droplet size, temperature, and position distributions on the substrate are predicted for different injection modes.

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Acknowledgments

This work is supported by the Natural Science Foundation of China (No. 50706027), the Innovation Program of Shanghai Municipal Education Commission (No. 09YZ206), and the Shanghai Leading Academic Discipline Project (No. J50501).

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Authors and Affiliations

  1. College of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China

    Y. Shan

  2. Centre for Advanced Coating Technology, University of Toronto, Toronto, ON, Canada

    T. W. Coyle & J. Mostaghimi

Authors
  1. Y. Shan
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  2. T. W. Coyle
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  3. J. Mostaghimi
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Corresponding author

Correspondence to Y. Shan.

Additional information

This article is an invited paper selected from presentations at the 2009 International Thermal Spray Conference and has been expanded from the original presentation. It is simultaneously published in Expanding Thermal Spray Performance to New Markets and Applications: Proceedings of the 2009 International Thermal Spray Conference, Las Vegas, Nevada, USA, May 4-7, 2009, Basil R. Marple, Margaret M. Hyland, Yuk-Chiu Lau, Chang-Jiu Li, Rogerio S. Lima, and Ghislain Montavon, Ed., ASM International, Materials Park, OH, 2009.

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Shan, Y., Coyle, T.W. & Mostaghimi, J. Modeling the Influence of Injection Modes on the Evolution of Solution Sprays in a Plasma Jet. J Therm Spray Tech 19, 248–254 (2010). https://doi.org/10.1007/s11666-009-9434-y

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  • DOI: https://doi.org/10.1007/s11666-009-9434-y

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