期刊
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
卷 117, 期 -, 页码 1-6出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2012.11.018
关键词
Wire explosion technique; Optical emission spectroscopy; Arc plasma; Pulse plasma; Powder technology; Physical vapor deposition; Nanoparticle
资金
- Malaysian Academy of Sciences, Malaysia [P40c]
- Ministry of Higher Education, Malaysia [FP007-2008C]
- F-Vote of the University of Malaya, Malaysia [PS319-2009C]
- FONDECYT, Chile [3110008]
The mechanism of nanoparticle formation by wire explosion process has been investigated by optical emission spectroscopy in Antony et al. 2010 [2] [J Quant Spectrosc Radiat Transfer 2010; 111:2509]. It was reported that the size of the nanoparticles formed in Ar ambience increases with increasing pressure, while an opposite trend was observed for the nanoparticles produced in N-2 and He ambiences. However, the physics behind this opposite trend seems unclear. In this work, we have investigated the probable mechanism behind the opposite trend in particle size with pressure of different gases and understand the mechanism of nanoparticle formation in wire explosion process. The experiment was carried out to investigate the effect of ambient gas species (Ar and N-2) and pressure on arc plasma formation and its corresponding effects on the characteristics of the produced nanoparticles in wire explosion process. Our results show that the arc plasma formation is probably the mechanism that may account for the opposite trend of particle size with pressure of different gases. (C) 2012 Elsevier Ltd. All rights reserved.
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