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http://dx.doi.org/10.3740/MRSK.2002.12.9.729

A Study on the Viscosity and Surface Tension for Foaming Materials and the Effects of Addition Elements  

Park, Soo-Han (ULSFoM-NRL, ReCAPT, Gyeongsang National Univ.)
Kim, Sang-Youl (ULSFoM-NRL, ReCAPT, Gyeongsang National Univ.)
Ahn, Duck-Kyu (ULSFoM-NRL, ReCAPT, Gyeongsang National Univ.)
Ha, Dong-In (ULSFoM-NRL, ReCAPT, Gyeongsang National Univ.)
Cho, Soon-Hyung (The center for Automotice Parts Technology Keimyung Univ.)
Bae, Suk-Cheon (The center for Automotice Parts Technology Keimyung Univ.)
Hur, Bo-Young (ULSFoM-NRL, ReCAPT, Gyeongsang National Univ.)
Publication Information
Korean Journal of Materials Research / v.12, no.9, 2002 , pp. 729-734 More about this Journal
Abstract
Porous Al metal was produced by batch type casting process. In this foaming process, the viscosity and surface tension of molten Al as two most important factors have been investigated in the temperature range of 680-95$0^{\circ}C$ by the ring method and rotational method respectively. The experimental results showed that both the surface tension and viscosity of the melt decreased linearly with increasing temperature. Addition of Ca decreased surface tension, but increased viscosity significantly.
Keywords
surface tension; viscosity; porous metal; foam metal;
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