ON THE DISPERSION OF SIC-AL SLURRIES IN ROTATING-FLOWS

被引：12

作者：

ELKADDAH, N

CHANG, KE

机构：

[1] Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 144卷

关键词：

D O I：

10.1016/0921-5093(91)90228-F

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An experimental study was conducted to determine the role of fluid flow on dispersion of SiC particles in molten aluminum. In this work, slurries containing up to 18 vol.% SiC were dispersed in rotational Couette flow at high shear rates ranging from 50 to 500 s-1. The relative viscosity of SiC-Al metal matrix composite slurries was also measured. It was found that the particles were uniformly dispersed in the radial direction. No particle agglomeration was observed. Axial dispersion was found to occur under certain stirring conditions. A particulate dispersion number PD based on stirring parameters and particle-settling velocity was developed to describe the dispersion behavior of particles in rotating fluids. The measured viscosities of the SIC-Al slurries investigated were found to be in good agreement with Einstein's equation.

引用

页码：221 / 227

页数：7

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