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Wettability in pressure infiltration of SiC and oxidized SiC particle compacts by molten Al and Al-12wt%Si alloy

Published online by Cambridge University Press:  31 January 2011

J.M. Molina ,
J. Tian ,
C. Garcia-Cordovilla ,
E. Louis  and
J. Narciso
J.M. Molina*
Affiliation:
Departamento de Física Aplicada, Universidad de Alicante, E-03080, Alicante, Spain; and Instituto de Materiales, Universidad de Alicante, E-03080, Alicante, Spain
J. Tian
Affiliation:
Institute of Material Science and Engineering, Ocean University of China, Qingdao 266100, People’s Republic of China
C. Garcia-Cordovilla
Affiliation:
Centro de Investigación y Desarrollo, Flat Rolling Products, Alcoa Europe, E-03080, Alicante, Spain
E. Louis
Affiliation:
Departamento de Física Aplicada, Universidad de Alicante, E-03080, Alicante, Spain; Instituto de Materiales, Universidad de Alicante, E-03080, Alicante, Spain; and Unidad Asociada of the Consejo Superior de Investigaciones Científicas, Universidad de Alicante, E-03080, Alicante, Spain
J. Narciso
Affiliation:
Instituto de Materiales, Universidad de Alicante, E-03080, Alicante, Spain; and Departamento de Química Inorgánica, Universidad de Alicante, E-03080, Alicante, Spain
*
a)Address all correspondence to this author. e-mail: jmmj@ua.es
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Abstract

The infiltration behavior of compacts of SiC particles in two surface conditions, as-received and thermally oxidized, was investigated by using pure Al and Al-12wt%Si as infiltrating metals. Analysis of the threshold pressure for infiltration revealed that the process is governed by the same contact angle for all different systems, no matter the metal or particle condition. This leads to the conclusion that oxidation does not modify the wetting characteristics of the particles, most probably because they are already covered by a thin native oxide layer that remains unaltered in processing routes involving short contact times and low temperatures, such as actual conditions of pressure infiltration at 700 °C.

Keywords

Infiltration (chemical reaction)OxidationParticulate
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 8 , August 2007 , pp. 2273 - 2278
Copyright
Copyright © Materials Research Society 2007

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References

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