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A Study of Debinding Behavior and Microstructural Development of Sintered Al-Cu-Sn Alloy

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Abstract:

A new approach is explored to achieve sintered aluminium alloy from metallic powder mixtures without compression or adding Mg. In this approach, mixtures of micron-sized aluminium powder (average size of 2.5 μm) and nano-sized alloying elemental powder of Cu and Sn (less than of 70nm), at appropriate proportions to compositions of Al-6wt%Cu, Al-6wt%Cu-3wt%Sn with and without adhesive binder were prepared by magnetic stirring. Then, the powder mixture was poured into a crucible and heat treated at a temperature of 600°C for 11 hours in inert atmosphere of N2 or Ar. In this paper, we investigate the debinding behavior of loosely packed Al-based powder mixture and the microstructural development and mechanical property sintered parts using a combination of thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffractrometry (XRD) and hardness test.

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Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

769-772

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.769

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Online since:

January 2007

Authors:

J.S. Kim, I.T.H. Chang, C. Lucien Falticeanu, G.J. Davies, Kyle Jiang

Keywords:

Differential Scanning Calorimetry (DSC), Micron-Sized Aluminium Powder, Nanosized Alloying Powder, Thermo Gravimetric Analysis (TGA), X-Ray Diffractometry

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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