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Effects of Particle Shape and Fiber Length on Viscosity of Metal Composite Mixes

Ahmad, Faiz and Mamat, Othman and Amir, Norlaili and German, R.M (2007) Effects of Particle Shape and Fiber Length on Viscosity of Metal Composite Mixes. Advances in Powder Metallurgy . MPIF, USA. ISBN 978-0-9793488-5-3

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Official URL: http://www.mpif.org/Pubs/2007conts.asp?linkid=87

Abstract

The particle shape and fiber length has significant effect on the viscosity of the metal composite mixes. The results of flow properties of metal composites have been presented in this paper. Metal powder and fibers were mixed with plastic binder and mixes were developed by extrusion compounding. The rheological properties of he composite mixes were studied by using a ram type rheometer in the shear rate ranges required for injection molding. Spherical shape aluminum powder and irregular shape aluminum alloy powders were used to study the effect of particle shape on the viscosity. Fibers of different lengths were substituted for powder in composite mixes. Results showed that metal mixes prepared from spherical shape powder showed lower viscosity compared to irregular shape powder particles. Rheological data showed that the composite mixes with longer fiber showed higher viscosity compared to the mixes with shorter fiber. However, increasing the temperature reduced the viscosity of the mixes.

Item Type:Book
Subjects:T Technology > TJ Mechanical engineering and machinery
ID Code:6240
Deposited By: Dr Norlaili Amir
Deposited On:02 Aug 2011 04:04
Last Modified:02 Aug 2011 04:04

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