The mechanism of spontaneous infiltration of Al{endash}Si alloy into SiC preform in air

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1996.0130· OSTI ID:280133

Xi, X M; Xiao, L M; Yang, X F ^[1]

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1. Materials Research and Education Center, 201 Ross Hall, Auburn University, Alabama 36849-5351 (United States)

Rapid, spontaneous infiltration can be achieved by dipping a SiC preform that contains pyrolyzed carbon into an Al{endash}Si alloy bath in an open air environment. The mechanism for infiltration is investigated in the present work by studying the effects of several relevant parameters on the infiltration process. Experimental results have shown that the requirements for rapid spontaneous infiltration are an infiltration temperature higher than 1400{degree}C, the presence of a pyrolized carbon, and the presence of SiC particle in the preforms. The concentration of Si in the alloy does not have significant influence on the infiltration rate, but it strongly affects the resulting microstructures in the infiltrated composites. {copyright} {ital 1996 Materials Research Society.}

• OSTI ID: 280133
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 4 Vol. 11; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COMPOSITE MATERIALS
INFILTRATION
MICROSTRUCTURE
SILICON ALLOYS
SILICON CARBIDES
WETTING