Journal of Materials Science

, Volume 26, Issue 4, pp 1061–1068 | Cite as

Preparation and properties of some alumina-chrome refractories

  • T. J. Davies
  • H. G. Emblem
  • C. S. Nwobodo
  • A. A. Ogwu
  • V. Tsantzalou


Preparative procedures, grain growth, densification and change in corundum lattice dimensions in sintered compacts made from chromium (III) oxide/aluminium (III) oxide mixtures were evaluated in a study of some alumina-chrome refractories. High-energy milling using “A17 reactive” alumina gave densification at low temperature and rapid grain growth, also a low variability in modulus of rupture. X-ray diffraction studies confirmed solid solution formation, the corundum lattice dimensions decreasing with 7 wt% chromium (III) oxide, other compositions giving lattice expansion. The modulus of rupture at 1150 °C for a series of ethyl silicate-bonded alumina-chrome refractories containing 5 to 12 wt% chromium (III) oxide was also minimal at 7 wt% chromium (III) oxide. The composition of this series is typical of ethyl silicate-bonded alumina-chrome refractories used in the steel industry.


Oxide Polymer Alumina Ethyl Chromium 
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Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • T. J. Davies
    • 1
  • H. G. Emblem
    • 1
  • C. S. Nwobodo
    • 1
  • A. A. Ogwu
    • 1
  • V. Tsantzalou
    • 1
  1. 1.Manchester Materials Science CentreUniversity of Manchester and UMISTManchesterUK

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