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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 6    No. 1    March 1996

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MEASUREMENT OF THE THERMODYNAMIC PROPERTIES OF Fe2Ti3O9  AND Fe2Ti05
Sun Kang,Zhang Lei

Department of Nonferrous Metals,Northeastern University,Shenyang 110006

Abstract:The thermodynamic properties of Fe2Ti309 and Fe2TiO5 were measured by means of the following solid state electrolyte cells:
    Pt,Fe+“Fe0”‖ZrO2 (CaO)‖FeTiO3+Fe2Ti3O9+Fe2O3,Pt
    Pt,  Fe+“Fe0”‖ZrO2(CaO)‖FeTiO3+Fe2TiO5+TiO2,Pt
    From the experimental data,the Gibbs energies of formation of Fe2Ti3O9 and Fe2TiO5  were obtained:
△G0pr (kJ .mol-1)= -3459.7-0.847T,(1053 K<T<l153K)
△G0pb (kJ .mol-1) =-1700.2-0.465T,(1173K<T<1273K)
 Experimental results fit approximately to those of estimation.

 

Key words: Fe­2Ti3O9  Fe2TiO5  thermodynamic  property  solid state  electrolyte cell

ISSN 1672-7029
CN 43-1423/U

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