B. DEBALINA, M. KAMARAJ, S. R. CHAKRAVARTHI, N. J. VASA, R. SARATHI. Understanding the Mechanism of Nanoparticle Formation in a Wire Explosion Process by Adopting the Optical Emission Technique[J]. Plasma Science and Technology, 2013, 15(6): 562-569. DOI: 10.1088/1009-0630/15/6/14
Citation:
B. DEBALINA, M. KAMARAJ, S. R. CHAKRAVARTHI, N. J. VASA, R. SARATHI. Understanding the Mechanism of Nanoparticle Formation in a Wire Explosion Process by Adopting the Optical Emission Technique[J]. Plasma Science and Technology, 2013, 15(6): 562-569. DOI: 10.1088/1009-0630/15/6/14
B. DEBALINA, M. KAMARAJ, S. R. CHAKRAVARTHI, N. J. VASA, R. SARATHI. Understanding the Mechanism of Nanoparticle Formation in a Wire Explosion Process by Adopting the Optical Emission Technique[J]. Plasma Science and Technology, 2013, 15(6): 562-569. DOI: 10.1088/1009-0630/15/6/14
Citation:
B. DEBALINA, M. KAMARAJ, S. R. CHAKRAVARTHI, N. J. VASA, R. SARATHI. Understanding the Mechanism of Nanoparticle Formation in a Wire Explosion Process by Adopting the Optical Emission Technique[J]. Plasma Science and Technology, 2013, 15(6): 562-569. DOI: 10.1088/1009-0630/15/6/14
1 Dept. of Metallurgical and Materials Engg., IIT Madras, Chennai 600036, India 2 Dept. of Aerospace Engg., IIT Madras, Chennai 600036, India 3 Dept. of Engineering Design, IIT Madras, Chennai 600036, India 4 Dept. of Electrical Engg., IIT Madras, Chennai 600036, India
In the present study nano-tungsten carbide particles were generated in a wire explo- sion process. The plasma generated during the wire explosion process was analyzed using optical emission spectroscopy (OES). The impact of ambient pressure on the plasma temperature, elec- tron density and plasma lifetime was studied. Lifetime variations of the plasma produced under different experimental conditions were analyzed. The produced nanoparticles were characterized through wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM) stud- ies. Particles produced with a negative DC charging voltage had a larger mean size when compared to a positive charging voltage. Polarity dependence on the plasma duration was observed where plasma was sustained for a longer duration with a negative DC charging voltage.
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