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


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.


Polymer Silicon Microscopy Electron Microscopy Scan Electron Microscopy 
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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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