Understanding the mechanism of nanoparticle formation in wire explosion process

被引：22

作者：

Bora, B. ^{[1
,2
]}

Wong, C. S. ^{[2
]}

Bhuyan, H. ^{[1
]}

Lee, Y. S. ^{[2
]}

Yap, S. L. ^{[2
]}

Favre, M. ^{[1
]}

机构：

[1] Pontificia Univ Catolica Chile, Dept Phys, Santiago 22, Chile

[2] Univ Malaya, Dept Phys, Plasma Technol Res Ctr, Kuala Lumpur 50603, Malaysia

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2013年 / 117卷

关键词：

Wire explosion technique; Optical emission spectroscopy; Arc plasma; Pulse plasma; Powder technology; Physical vapor deposition; Nanoparticle; COPPER; NANOPOWDERS; DISCHARGE; ARGON;

D O I：

10.1016/j.jqsrt.2012.11.018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：1 / 6

页数：6

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