Abstract
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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
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.
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.
Z. Karoly and J. Szepvolgyi, Hollow alumina microspheres prepared by RF thermal plasma, Powder Technology, 2003, Vol. 132, P. 211–215.
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.
A.A. Uglov (editor), Physico-Chemical Processes in Materials Treated with Concentrated Energy Fluxes, Nauka, Moscow, 1989.
A.V. Lykov, Heat and Mass Transfer (Handbook), Energiya, Moscow, 1978.
V.V. Deineko, Methods for Approximate Solution of Ordinary Differential Equations, Izdatel, Novosibirsk, 1992.
M.A. Maurakh and B.S. Mitin, Liquid Refractory Oxides, Metallurgy, Moscow, 1979.
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.
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.
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.
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was financially supported by the SB RAS Interdisciplinary Integration Project No. 98 for the years 2012 to 2014.
Rights and permissions
About this article
Cite this article
Solonenko, O.P. Criterion conditions for the formation of hollow microspheres from plasma-treated agglomerated particles. Thermophys. Aeromech. 21, 735–746 (2014). https://doi.org/10.1134/S0869864314060080
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0869864314060080