Paper Titles
Committees
A New General Equation of Mean Particle Size for Different Atomization Processes
p.1
Acid-Insoluble Substances in Reduced Iron Powder from Ores
p.5
Aerosol Synthesis and Growth Mechanism of Magnetic Iron Nanoparticles
p.9
Atomization Using a Pressure-Gas-Atomizer
p.13
Characteristics of (Fe, M)S2 (M=Co, Ni, Mo) Composite Powders Fabricated by MCP
p.17
Characteristics of Porous YAG Powders Fabricated by PVA Polymer Solution Technique
p.21
Characterization of GaP Nanowires Synthesized by Chemical Vapor Deposition
p.25
Consideration of Fe Nanoparticles and Nanowires Synthesized by Chemical Vapor Condensation Process
p.29

A New General Equation of Mean Particle Size for Different Atomization Processes

Article Preview

Abstract:

In conventional studies, different empirical atomization equations are correlated for different kinds of atomization methods or even in the same method. In the present study, it was found that the basic law of melt breakup from bulky liquid into droplets can be universally applied to all atomization methods. Based on theoretical analysis, a new general equation of mean particle size applicable to both conventional atomization methods and new atomization processes is presented. The mean particle size in melt atomization is mainly controlled and decided by two key dimensionless parameter groups representing the liquid stability of melts and the breakup ability of atomizer respectively. Different specific atomization mechanisms result in different formulae in conventional atomization methods. In case of gas atomization, it is equivalent with and can be changed into Lubanska Equation. In case of centrifugal atomization, it can be changed into the equations that are currently the most widely used. In case of water atomization, it is similar to the equation proposed by Grandzol and Tallmadge. According to the universal equation, new correlations for mean particle size in novel atomization processes such as Hybrid Atomization and Multistage Atomization were proposed and agreed with our experimental data well.

You might also be interested in these eBooks
Progress in Powder Metallurgy View Preview

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

1-4

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.1

Citation:

Cite this paper

Online since:

January 2007

Authors:

Yun Zhong Liu, Yuan Yuan Li

Keywords:

General Atomization Equation, Mean Particle Size, Metal Atomization

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J. J. Dunkley: ASM Handbook Vol. 7 (ASM International, USA. 1998).

Google Scholar

[2] A. Lawley: Atomization-the Production of Metal Powders (MPIF, USA. 1992).

Google Scholar

[3] K. Halada and H. Suga: Powder and Powder Metallurgy (in Japanese), Vol. 37 (1990), p.492.

Google Scholar

[4] H. Lubanska: Journal of Metals, Vol. 22(1970), p.45.

Google Scholar

[5] Y. Liu, K. Minagawa, H. Kakisawa and K. Halada: Int. J. Powder Metall., Vol. 39(2003), p.29.

Google Scholar

[6] Y. Z. Liu: Ph.D. Thesis, Central South University, China, (1998), p.30.

Google Scholar

[7] R. J. Grandzol and J. A. Tallmadge: AM. Inst. Chem. Engineers J., Vol. 19(1973), p.1149.

Google Scholar

[8] Y. Z. Liu and Z. Chen: SDMA 2003 & ICSF V, Vol. 1(2003), p.67.

Google Scholar