Journal of Materials Science

, Volume 26, Issue 7, pp 1899–1902 | Cite as

Surface oxidation of ferrochromium thin films

  • S. Veena Kumari
  • V. K. Vaidyan
  • K. G. Sathyanarayana


Oxidation kinetics of ferrochromium (Cr 72 wt%, Fe 28 wt%) films of different thicknesses were followed at room temperature in the laboratory atmosphere by noting the conductivity of vacuum-deposited films as a function of time for a period of 150 minutes. A logarithmic oxidation growth with two different rate constants is obtained. X-ray diffraction analysis of 50 nm thick films at various temperatures indicated a solid solution of chromium and iron-chromium oxides. A decrease of lattice spacing observed with temperature increase is attributed to composition/structural changes near the metal-oxide interface. Microstructures of these film surfaces reveal the formation of bluish green crystals of Cr2O3 at 773 K.


Microstructure Chromium Solid Solution Diffraction Analysis Film Surface 
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Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • S. Veena Kumari
    • 1
  • V. K. Vaidyan
    • 1
  • K. G. Sathyanarayana
    • 2
  1. 1.Department of PhysicsUniversity of KeralaTrivandrumIndia
  2. 2.Regional Research Laboratory (CSIR)TrivandrumIndia

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