Investigation of the oxidation behaviour of FeTi alloy

The FeTi intermetallic compound, when oxidised at various temperatures, exhibits some interesting properties. XRD analysis of the treated samples indicates the formation of FeTiO 3 and Fe 3O 4 phases at 973 K. ESR and DRS studies on the alloy sample treated at various temperatures in oxygen revealed...

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Bibliographic Details
Published in:Materials chemistry and physics 1990-03, Vol.24 (5), p.495-501
Main Authors: Sridhar Kumar, M.P., Viswanathan, B., Swamy, C.S., Srinivasan, V.
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion mechanisms
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Specific materials
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Summary:The FeTi intermetallic compound, when oxidised at various temperatures, exhibits some interesting properties. XRD analysis of the treated samples indicates the formation of FeTiO 3 and Fe 3O 4 phases at 973 K. ESR and DRS studies on the alloy sample treated at various temperatures in oxygen revealed that in the case of Ti, oxidation proceeds in a step-wise process forming the oxygen deficient phase and then the TiO 2 phase, which ultimately leads to the ternary FeTiO 3 phase. Iron first forms the ferric oxide phase which is then converted to the FeTiO 3 or the magnetic Fe 3O 4 phase. Thus there is evidence for preferential oxidation of the two constituent elements leading to new catalytic systems.
ISSN:0254-0584
1879-3312
DOI:10.1016/0254-0584(90)90137-Y