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Journal of Materials Science

, Volume 31, Issue 3, pp 795–805 | Cite as

Spinel growth in the interface of δ-Al2O3 fibre reinforced aluminium piston alloys

  • H. J. Dudek
  • R. Borath
  • A. Kleine
Papers

Abstract

Spinel growth is studied by analytical electron microscopy in the fibre-matrix interface of as-processed and in thermal treated δ-Al2O3 fibre reinforced AlSi12CuMgNi alloys. In the as-processed composites a few nanometer large spinel crystals are observed in the fibre-matrix interface. They are interpreted as the reaction product of remnants of the SiO2 binder, with magnesium segregating in the interface. In the thermally treated material, large spinel crystals of a few tenths of a micrometer grow on the fibre, preferentially at positions where α-Al2O3 crystals reach the δ fibre surface. The spinel grows into the aluminium grain of the matrix, as well as into α-Al2O3 of the fibre. The orientational relationship of the spinel and the alumina is studied and the results are discussed in relation to the fibre wetting, adhesion and fibre-matrix reaction.

Keywords

Polymer Aluminium Electron Microscopy SiO2 Magnesium 
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 1996

Authors and Affiliations

  • H. J. Dudek
    • 1
  • R. Borath
    • 1
  • A. Kleine
    • 2
  1. 1.Institute for Materials ResearchDLRKölnGermany
  2. 2.BAFA Federal Export OfficeEschbornGermany

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