Abstract
In-flight spheroidization of alumina powders in Ar–H2 (H2–7.6%, vol/vol) and Ar–N2 (N2–13.0%, vol/vol) RF induction plasmas was investigated numerically and experimentally. The mathematical model for the plasma flows incorporates the k–ɛ turbulence model, and that for particles is the Particle-Source-in-Cell (PSI-Cell) model. Experimental results demonstrate that spheroidized alumina particles are produced in both Ar–H2 and Ar–N2 RF plasmas, with different particle size distributions and crystal phases. Agreement between the predicted and measured particle size distributions is satisfactory under high particle feed rate conditions, while the results obtained for the Ar–H2 plasma are better than those for the Ar–N2 plasma. The discrepancy occurring in low feed rate conditions suggests that particle evaporation is an important factor affecting the plasma–particle heat transfer.
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References
M.I. Boulos (1996) Pure Appl. Chem. 68 1007
M. I. Boulos (1997) High Temp. Mater. Process. 1 17
X. Fan T. Ishigaki Y. Sato (1997) J. Mater. Res. 12 1315
T. Ishigaki M. I. Boulos (1991) Ceram. Trans. 22 139
T. Ishigaki Y. Bando Y. Moriyoshi M. I. Boulos (1993) J. Mater. Sci. 28 4223
K. Chen, Etude de procédés de déposition par plasma inductif, PhD Thesis, University of Sherbrooke, Quebec, Canada, 1993.
C. T. Crowe M. P. Sharma D. E. Stock (1977) J. Fluids Eng. 99 325
K. Chen M. I. Boulos J. Phys. D (1994) Appl. Phys 27 946
E. Pfender Y. C. Lee (1985) Plasma Chem. Plasma Process. 5 211
E. Pfender (1990) Plasma Chem. Plasma Process. 9 167S
R. Ye P. Proulx M. I. Boulos J. Phys. D (2000) Appl. Phys 33 2154
P. Proulx J. Mostaghimi M. I. Boulos (1985) Int. J. Heat Mass Transfer 28 1327
S. V. Patankar (Eds) (1980) Numerical Heat Transfer and Fluid Flow McGraw-Hill New York
M. I. Boulos P. Fauchais E. Pfender (1994) Thermal Plasmas: Fundamentals and Applications, Vol. 1 Plenum Press New York
R. B. Bird W. E. Steward E. N. Lightfoot (Eds) (1960) Transport Phenomena Wiley New York
S. L. Girshick W. Yu (1990) Plasma Chem. Plasma Process. 10 516
X. Chen E. Pfender (1982) Plasma Chem. Plasma Process. 2 185
M. Vardelle C. Trassy A. Vardelle P. Fauchais (1991) Plasma Chem. Plasma Process 11 185
A. B. Murphy (2001) J. Phys. D: Appl. Phys. 34 R151
A. B. Murphy (1997) Phys. Rev. E. 55 7473
R. McPherson (1973) J. Mater. Sci. 8 851
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Ye, R., Ishigaki, T., Jurewicz, J. et al. In-Flight Spheroidization of Alumina Powders in Ar–H2 and Ar–N2 Induction Plasmas. Plasma Chem Plasma Process 24, 555–571 (2004). https://doi.org/10.1007/s11090-004-7932-8
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DOI: https://doi.org/10.1007/s11090-004-7932-8