Fabrication of Carbon Nano-Fiber / Aluminum Composites by Low-Pressure Infiltration Method

Author:

Sasaki Gen1,Hara Yoshimasa1,Xu Zhe Feng1,Sugio Kenji1,Fukushima Hiroshi1,Choi Yong Bum1,Matsugi Kazuhiro1

Affiliation:

1. Hiroshima University

Abstract

In this study, the fabrication of carbon containing aluminum composites was attempted by using low-pressure infiltration method. At first, porous preform containing vapor grown nano-fiber (VGCF) and pure aluminum powder was fabricated by spark plasma sintering (SPS) method. Porosity in preform was controlled by changing the applied pressure during plasma sintering. Consequently, the porous preform with 40-50vol% in porosity was obtained, which has enough compression strength for low-pressure infiltration (<1MPa). Then, the molten pure aluminum infiltrated to porous preform with 0.4MPa in applied pressure at 1023K, and consequently we can obtain the composite with 62-86% in density. The electrical and thermal conductivity of composites was affected by the porosity, strongly.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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