Spheroidization of silica powders by radio frequency inductively coupled plasma with Ar-H<sub>2</sub> and Ar-N<sub>2</sub> as the sheath gases at atmospheric pressu

Lin Li; Guo-hua Ni; Qi-jia Guo; Qi-fu Lin; Peng Zhao; Jun-li Cheng

doi:10.1007/s12613-017-1497-z

Volume 24 Issue 9

Sep. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(9): 1067-1074

Lin Li, Guo-hua Ni, Qi-jia Guo, Qi-fu Lin, Peng Zhao, and Jun-li Cheng, Spheroidization of silica powders by radio frequency inductively coupled plasma with Ar-H₂ and Ar-N₂ as the sheath gases at atmospheric pressu, Int. J. Miner. Metall. Mater., 24(2017), No. 9, pp. 1067-1074. https://doi.org/10.1007/s12613-017-1497-z

Cite this article as:

Lin Li, Guo-hua Ni, Qi-jia Guo, Qi-fu Lin, Peng Zhao, and Jun-li Cheng, Spheroidization of silica powders by radio frequency inductively coupled plasma with Ar-H2 and Ar-N2 as the sheath gases at atmospheric pressu, Int. J. Miner. Metall. Mater., 24(2017), No. 9, pp. 1067-1074. https://doi.org/10.1007/s12613-017-1497-z

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Research Article

Spheroidization of silica powders by radio frequency inductively coupled plasma with Ar-H₂ and Ar-N₂ as the sheath gases at atmospheric pressu

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Corresponding author:
Lin Li E-mail: lilin@ipp.ac.cn
Received: 8 February 2017; Revised: 30 May 2017; Accepted: 6 June 2017

Abstract

Abstract

Amorphous spherical silica powders were prepared by inductively coupled thermal plasma treatment at a radio frequency of 36.2 MHz. The effects of the added content of hydrogen and nitrogen into argon (serving as the sheath gas), as well as the carrier gas flow rate, on the spheroidization rate of silica powders, were investigated. The prepared silica powders before and after plasma treatment were examined by scanning electron microscopy, X-ray diffraction, and laser granulometric analysis. Results indicated that the average size of the silica particles increased, and the transformation of crystals into the amorphous state occurred after plasma treatment. Discharge image processing was employed to analyze the effect of the plasma temperature field on the spheroidization rate. The spheroidization rate of the silica powder increased with the increase of the hydrogen content in the sheath gas. On the other hand, the spheroidization rate of the silica power first increased and then decreased with the increase of the nitrogen content in the sheath gas. Moreover, the amorphous content increased with the increase of the spheroidization rate of the silica powder.
- silica powders;
- spheroidization;
- inductively coupled plasma;
- mixed gas

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[1]	R. Płatek, L. Malinowski, R. Sekuła, and P. Zwolinski, Experimental and numerical analysis of microstructure damage in silica filled epoxy, Procedia Struct. Integrity, 2(2016), p. 285.
[2]	C. Kanchanomai, N. Noraphaiphipaksa, and Y. Mutoh, Wear characteristic of epoxy resin filled with crushed-silica particles, Composites Part B, 42(2011), No. 6, p. 1446.
[3]	S. Palaniandy, K.A.K. Azizi, M. Jaafar, F.N. Ahmad, H. Hussin, and S.F.S. Hashim, Effect of structural changes of silica filler on the coefficient of thermal expansion (CTE) of underfill encapsulant, Powder Technol., 185(2008), No. 1, p. 54.
[4]	Y.M. Wang, J.J. Hao, and Y.W. Sheng, Spheroidization of Nd-Fe-B powders by RF induction plasma processing, Rare Met. Mater. Eng., 42(2013), No. 9, p. 1810.
[5]	M. Boulos, Plasma power can make better powders, Met. Powder Rep., 59(2004), No. 5, p. 16.
[6]	C. Lu, J.M. Fan, P.C. Zhao, and F.L. Yuan, Preparation of hollow silica spheres by DC thermal plasma, Powder Technol., 266(2014), No. 6, p. 210.
[7]	T. Gholami, M. Salavati-Niasari, M. Bazarganipour, and E. Noori, Synthesis and characterization of spherical silica nanoparticles by modified stöber process assisted by organic ligand, Superlattices Microstruct., 61(2013), p. 33.
[8]	S.L. Chen, G.M. Yuan, and C.T. Hu, Preparation and size determination of monodisperse silica microspheres for particle size certified reference materials, Powder Technol., 207(2011), No. 1-3, p. 232.
[9]	H.Y. Jin, N. Song, N. Wang, Y.Q. Wang, J. Zhou, J.Y. Chen, and S.E. Hou, Preparation of low radioactivity spherical silicon oxide powders via chemical-flame spheroidizing process, Colloids Surf. A, 381(2011), No. 1-3, p. 13.
[10]	X.Y. Shen, Y.C. Zhai, Y. Sun, and H.M. Gu, Preparation of monodisperse spherical SiO₂ by microwave hydro-thermal method and kinetics of dehydrated hydroxyl, J. Mater. Sci. Technol., 26(2010), No. 8, p. 711.
[11]	T. Jesionowski, Preparation of spherical silica in emulsion systems using the co-precipitation technique, Mater. Chem. Phys., 113(2009), No. 1-3, p. 839.
[12]	Z.J. Ji, H.Y. Jin, Y.Q. Wu, Y.L. Li, M. Liu, C.H. Xu, P. Hou, J. Dong, and S.E. Hou, Numerical simulation of silica particle trajectory in flow field and silica particle spheroidizing in oxygen-acetylene flame spheroidization process, Powder Technol., 286(2015), p. 451.
[13]	H.Y. Jin, L. Xu, and S.E. Hou, Preparation of spherical silica powder by oxygen-acetylene flame spheroidization process, J. Mater. Process. Technol., 210(2010), No. 1, p. 81.
[14]	L.Z. Wang, Y. Liu, and S. Chang, Fabrication of spherical AlSi₁₀Mg powders by radio frequency plasma spheroidization, Metall. Mater. Trans. A, 47(2016), No. 5, p. 2444.
[15]	X.P. Liu, K.S. Wang, P. Hu, Q. Chen, and A.A. Volinsky, Spheroidization of molybdenum powder by radio frequency thermal plasma, Int. J. Miner. Metall. Mater., 22(2015), No. 11, p. 1212.
[16]	Z. Károly and J. Szépvölgyi, Plasma spheroidization of ceramic particles, Chem. Eng. Process., 44(2005), No. 2, p. 221.
[17]	M.I. Boulos, Transport phenomena in thermal plasmas,[in] The 22nd International Symposium on Plasma Chemistry, Antwerp, 2015, p.1.
[18]	N.N. Sesi, A. Mackenzie, K.E. Shanks, P.Y. Yang, and G.M. Hieftje, Fundamental studies of mixed-gas inductively coupled plasmas, Spectrochim. Acta, Part B, 49(1994), No. 12-14, p. 1259.
[19]	R. Ye, T. Ishigaki, J. Jurewicz, P. Proulx, and M.I. Boulos, In-flight spheroidization of alumina powders in Ar-H₂ and Ar-N₂ induction plasmas, Plasma Chem. Plasma Process., 24(2004), No. 4, p. 555.
[20]	M. Ghiyasiyan-Arani, M. Masjedi-Arani, D. Ghanbari, S. Bagheri, and M. Salavati-Niasari, Novel chemical synthesis and characterization of copper pyrovanadate nanoparticles and its influence on the flame retardancy of polymeric nanocomposites, Sci. Rep., 6(2016), p. 25231.
[21]	M. Ghiyasiyan-Arani, M. Masjedi-Arani, and M. Salavati-Niasari, Simple precipitation synthesis of pure Cu₃V₂O₈ nanoparticles and investigation of their optical properties, J. Nanostruct., 5(2015), No. 4, p. 437.
[22]	M. Ghiyasiyan-Arani, M. Masjedi-Arani, and M. Salavati-Niasari, Novel Schiff base ligand-assisted in-situ synthesis of Cu₃V₂O₈ nanoparticles via a simple precipitation approach, J. Mol. Liq., 216(2016), p. 59.
[23]	M. Ghiyasiyan-Arani, M. Masjedi-Arani, D. Ghanbari, and G. Nabiyouni, A sonochemical-assisted synthesis of spherical silica nanostructures by using a new capping agent, Ceram. Int., 40(2014), No. 1, p. 495.
[24]	A. Bogaerts and R. Gijbels, Effects of adding hydrogen to an argon glow discharge:overview if relevant processes and some qualitative explanations, J. Anal. At. Spectrom., 15(2000), No. 4, p. 441.
[25]	Y.L. Li and T. Ishigaki, Spheroidization of titanium carbide powders by induction thermal plasma processing, J. Am. Ceram. Soc., 84(2001), No. 9, p. 1929.
[26]	O. Chumak, T. Kavka, and M. Hrabovsky, Characterization of plasma jet structure and fluctuations by statistic processing of photographic images, IEEE Trans. Plasma Sci., 36(2008), No. 4, p. 1062.
[27]	H. Takana, J.Y. Jang, J. Igawa, T. Nakajima, O.P. Solonenko, and H. Nishiyama, Improvement of in-flight alumina spheroidization process using a small power argon DC-RF hybrid plasma flow system by helium mixture, J. Therm. Spray Technol., 20(2011), No. 3, p. 432.
[28]	A. Wassiljewa, Heat conduction in gas mixtures, Physikalische Zeitschrift, 5(1904), No. 22, p. 737.
[29]	M. Ghiyasiyan-Arani, M. Masjedi-Arani, and M. Salavati-Niasari, Facile synthesis, characterization and optical properties of copper vanadate nanostructures for enhanced photocatalytic activity, J. Mater. Sci. Mater. Electron., 27(2016), No. 5, p. 4871.