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Dehydration-Reduction Coupling Effects in the Transformation of Goethite to Magnetite

  • M. L. Garcia-Gonzalez
  • P. Grange
  • B. Delmon

Abstract

The quality of γ-.Fe2O3 (maghemite) used in magnetic tapes strongly depends on the various stages of preparation. The present communication concerns the first stages, namely dehydration and reduction of goethite (γ-FeOOH) to magnetite (Fe3O4). We have focused our study on the effect of water pressure on these two stages and on the coupling effect between dehydration and reduction. Particular attention was paid to consequences of this coupling effect on the texture of the products.

Keywords

Coupling Effect Ferric Sulfate Metallic Iron Water Vapor Pressure Magnetic Tape 
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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References

  1. 1.
    M.M. Dubinin, J.Colloid and Interface Sci.,23, 1967, 487.Google Scholar
  2. 2.
    R.Sh.Mikhail, S.Brunauer, E.E.Bodor., J.Colloid.and Interface Sci., 26, 1968, 45.Google Scholar
  3. 3.
    J.J.Jurinak, J.Colloid Science, 19, 1964, 477.Google Scholar
  4. 4.
    A.Claveau and C.E.Beaulieu, Mem.Sci.Rec.Metal., 60, 1973, 173.Google Scholar
  5. 5.
    G.Fagherazzi, Chim.Ind.(Milan), 47, 1965, 75.Google Scholar
  6. 6.
    V.J.Arkharov, V.N.Bogosluvsky, F.S.Met.Metallov., 3, 1956, 254.Google Scholar

Copyright information

© Springer Science+Business Media New York 1977

Authors and Affiliations

  • M. L. Garcia-Gonzalez
    • 1
  • P. Grange
    • 1
  • B. Delmon
    • 1
  1. 1.Groupe de Physico-Chimie Minérale et de CatalyseUniversité Catholique de LouvainLouvain-la-NeuveBelgium

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