Paper Title:

Alumina/Aluminum Composite Fabricated by Freeze and Dry Process with Water-Soluble Polymer Slurry

Periodical Materials Science Forum (Volumes 486 - 487)
Main Theme Eco-Materials Processing & Design VI
Edited by Hyung Sun Kim, Sang-Yeop Park, Bo Young Hur and Soo Wohn Lee
Pages 329-332
DOI 10.4028/www.scientific.net/MSF.486-487.329
Citation M. Nakata et al., 2005, Materials Science Forum, 486-487, 329
Online since June, 2005
Authors M. Nakata, Katsuaki Suganuma
Keywords Alumina Composite, Aluminium Composite, Coefficient of Thermal Expansion, Dry Process, Freeze Process, Partial Sintering Process, Porous Ceramics, Thermal Conductivity (TC)
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Abstract

To clarify the effects of parameters of porous ceramics form on the characteristics of composites fabricated by high-pressure infiltration, Alumina forms with different porosity (15~70vol %) and pore morphology were fabricated by Freeze and Dry Process and Partial Sintering Process. Alumina/aluminum composites were made by the squeeze casting. The composites contained the different volume fraction of aluminum depending on the initial porosity of the ceramics form. The coefficient of thermal expansion (CTE) and thermal conductivity of composites were measured. The results indicated clearly that variation of the structure of porous ceramics form fairly affected CTE but the effects on thermal conductivity were small.