The reactive infiltration of porous ceramic media by a molten aluminum alloy

The dynamics of reactive infiltration were experimentally determined by measuring the length of the infiltrated part of specimens. All porous preforms used in this study were fabricated by packing selected ceramic powders into quartz tubes. Infiltration was performed by direct immersion of the quart...

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Bibliographic Details
Published in:Composites science and technology 1999-01, Vol.59 (5), p.683-686
Main Author: Kevorkijan, Varuz ̌an M.
Format: Article
Language:English
Subjects:
A. Metal-matrix composites (MMCs)
A. Particle-reinforced composites
Applied sciences
B. Interface
D. Optical microscopy
Dispersion hardening metals
E. Liquid metal infiltration (LMI)
Exact sciences and technology
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
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Summary:The dynamics of reactive infiltration were experimentally determined by measuring the length of the infiltrated part of specimens. All porous preforms used in this study were fabricated by packing selected ceramic powders into quartz tubes. Infiltration was performed by direct immersion of the quartz tube containing the packed powder into a liquid metal in an argon or nitrogen atmosphere. After a selected time, the sample was removed from the alloy bath and air-cooled. The length of infiltration was determined by means of optical microscopy. The collected experimental data suggest that the length of infiltration linearly increases with the time and exponentially with the temperature of infiltration.
ISSN:0266-3538
1879-1050
DOI:10.1016/S0266-3538(98)00116-X