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Journal of Materials Science

, Volume 29, Issue 21, pp 5583–5588 | Cite as

Wetting behaviour and mullite formation at the interface of inviscid melt-spun CaO-Al2O3 fibre-reinforced Al-Si alloy (4032) composite

  • Yun-Mo Sung
  • Kyung-Yol Yon
  • S. A. Dunn
  • J. A. Koutsky
Papers

Abstract

Inviscid melt-spun calcia-alumina fibre-reinforced aluminium-silicon alloy (4032) composites were produced using a melt-infiltration technique. Scanning electron microscopy, energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) were used to investigate interfacial wetting and interphase formation, and identify the crystalline phase of the interphase of these composites. The composites processed at 700°C showed a good interfacial wetting and silicon accumulation at the interface. The composites processed at 927°C showed formation of an interphase region of about 10–20 μm thick, as well as excellent interfacial wetting. EDS analysis gave averaged compositions of this interphase region at 74 wt % Al and 26 wt % Si, which corresponds to the composition of mullite (3Al2O3 · 2SiO2). The formation of mullite at the interface was confirmed by XRD analysis.

Keywords

Polymer Silicon Microscopy Electron Microscopy Scan Electron Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • Yun-Mo Sung
    • 1
  • Kyung-Yol Yon
    • 1
    • 2
  • S. A. Dunn
    • 1
    • 2
  • J. A. Koutsky
    • 1
    • 2
    • 3
  1. 1.Department of Materials Science and EngineeringUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Materials Science ProgramUniversity of Wisconsin-MadisonMadisonUSA
  3. 3.Department of Chemical EngineeringUniversity of Wisconsin-MadisonMadisonUSA

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