Criterion conditions for the formation of hollow microspheres from plasma-treated agglomerated particles


A theoretical analysis of the processes proceeding during treatment of agglomerated particles in plasma flows is performed within the context of obtaining hollow microspherical powders from such particles. For the first time, approximate theoretical solutions were used to formulate the criteria to the plasma flow, and also the criteria to the particle material characteristics, whose realization is required for forming hollow microspheres with maximum possible diameter and minimum wall thickness of the particle shell. The study can prove useful for workers engaged in the development of processes for obtaining and application of powder materials.

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  1. 1.

    O.P. Solonenko, I.P. Gulyaev, and A.V. Smirnov, Thermal plasma processes for production of hollow spherical powders: theory and experiment, J. Thermal Sci. and Technology, 2011, Vol. 6, No. 2, P. 219–234.

    Article  ADS  Google Scholar 

  2. 2.

    V. Hurevich, L. Pawlowski, and I. Smurov, Heating of porous particles in plasma flame, in: Proc. Int. Thermal Spray Conf., March 4–6, Essen, Germany, 2002, P. 32–36.

    Google Scholar 

  3. 3.

    Z. Karoly and J. Szepvolgyi, Hollow alumina microspheres prepared by RF thermal plasma, Powder Technology, 2003, Vol. 132, P. 211–215.

    Article  Google Scholar 

  4. 4.

    A. Kumar and S. Gu, Modeling of the impingement of hollow metal droplets onto a flat surface, Int. J. Heat and Fluid Flow, 2012, Vol. 37, P. 189–195.

    Article  Google Scholar 

  5. 5.

    A.A. Uglov (editor), Physico-Chemical Processes in Materials Treated with Concentrated Energy Fluxes, Nauka, Moscow, 1989.

    Google Scholar 

  6. 6.

    A.V. Lykov, Heat and Mass Transfer (Handbook), Energiya, Moscow, 1978.

    Google Scholar 

  7. 7.

    V.V. Deineko, Methods for Approximate Solution of Ordinary Differential Equations, Izdatel, Novosibirsk, 1992.

    Google Scholar 

  8. 8.

    M.A. Maurakh and B.S. Mitin, Liquid Refractory Oxides, Metallurgy, Moscow, 1979.

    Google Scholar 

  9. 9.

    O.P. Solonenko, A.V. Smirnov, and I.P. Gulyaev, Spreading and solidification of hollow molten drop under impact onto substrate: computer simulation and experiment, in: Complex Systems: 5th Int. Workshop on Complex Systems, 25–28 September 2007, Sendai, Japan, Proc. AIP Conf., 2008, Vol. 982, P. 561–568.

    Article  ADS  Google Scholar 

  10. 10.

    O.P. Solonenko and A.V. Smirnov, Multi-functional plasma torch for generation of stable, lengthy, and low-noise quasi-laminar jet, Design concept (know-how), Khristianovich Institute of Theoretical and Applied Mechanics SB RAS (ITAM SB RAS), 2007.

    Google Scholar 

  11. 11.

    O.P. Solonenko, H. Nishiyama, A.V. Smirnov, H. Takana, and J. Jang, Visualization of arc and plasma flow patterns for advanced material processing, J. Visualization, 2015, Vol. 18, No. 1, P. 1–15.

    Article  Google Scholar 

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Correspondence to O. P. Solonenko.

Additional information

This work was financially supported by the SB RAS Interdisciplinary Integration Project No. 98 for the years 2012 to 2014.

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Solonenko, O.P. Criterion conditions for the formation of hollow microspheres from plasma-treated agglomerated particles. Thermophys. Aeromech. 21, 735–746 (2014).

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Key words

  • ultra-fine particle
  • agglomerate
  • plasma treatment of agglomerated powders
  • heat flux density
  • heating
  • melting
  • hollow microsphere
  • wall thickness
  • alumina