Accession Number : ADA184682

Title :   The Infiltration Kinetics of Aluminum in Silicon Carbide Compacts.

Descriptive Note : Annual rept.,

Corporate Author : COLORADO SCHOOL OF MINES GOLDEN CENTER FOR WELDING RESEARCH

Personal Author(s) : Edwards, Glen R ; Olson, David L

PDF Url : ADA184682

Report Date : Jul 1987

Pagination or Media Count : 44

Abstract : Although metal matrix composites have been fabricated by various techniques, the most successful are solid state processes such as powder metallurgy and diffusion bonding. Liquid metal processes such as compucasting, pultrusion, and infiltration, while less successful, are potentially more economical. The advantages of producing silicon carbide-aluminum matrix composites by liquid metal infiltration techniques can not be fully realized without an improved understanding of the infiltration behavior and the fiber/matrix bonding mechanisms. This paper reports on infiltration models which consider the physical properties of the liquid and preform (either porous compact or capillary/tube bundle). These properties include viscosity, density, surface tension, and wettability (pore shape and size in the case of the porous compact). The models have been assessed in terms of their ability to predict infiltration behavior from known physical properties of the materials.

Descriptors :   *METAL MATRIX COMPOSITES, *SILICON CARBIDES, *ALUMINUM, COMPACTING, LIQUID METALS, INFILTRATION(FLUIDS), CAPILLARY TUBES, CERAMIC MATERIALS, INTERFACIAL TENSION, WETTING, VISCOSITY, DENSITY, MAGNESIUM, SILICON DIOXIDE, IRON, ALUMINUM

Subject Categories : Laminates and Composite Materials
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE