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The effect of antimony on the interfaces of cast AlSi-SiC composites

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Abstract

When the matrix alloy of an AlSi7Mg-SiC composite has been modified with antimony, the wetting properties of the system deteriorate. Using transmission electron microscopy and microanalysis it was found that this is probably related to the formation of a film-like amorphous antimony-rich oxide at the matrix-silicon carbide interfaces. Associated with this compound are pores at the interfaces. The film-like compound is generally intermixed with magnesium-aluminium spinel crystallites at the interfaces and with the neighbouring matrix. No antimony-rich phase is found away from the interfaces.

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Authors and Affiliations

  1. SINTEF Applied Physics, N-7034 Trondheim, Norway

    A. Bardal

  2. Department of Physics, University of Trondheim-NTH, Norway

    A. Bardal

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  1. A. Bardal
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Bardal, A. The effect of antimony on the interfaces of cast AlSi-SiC composites. JOURNAL OF MATERIALS SCIENCE 28, 2699–2705 (1993). https://doi.org/10.1007/BF00356206

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  • DOI: https://doi.org/10.1007/BF00356206

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