Original scientific paper

Chemical composition and morphology of oxidic ceramics at filtration of steel deoxidised by aluminium

J. Bažan ; Faculty of Metallurgy and Materials Engineering, VŠB-TU Ostrava, Czech Republic
K. Stránský ; VUT Brno, FSI, Czech Republic
D. Horáková ; Faculty of Metallurgy and Materials Engineering, VŠB-TU Ostrava, Czech Republic

Abstract

Composition and morphology of filter ceramics were investigated during filtration of steel deoxidised by aluminium. Filtration was realized with use of filters based on oxidic ceramics Cr₂O₃, TiO₂, SiO₂, ZrO₂, Al₂O₃, 3Al₂O₃•2SiO₂ and MgO•Al₂O₃. It was established that change of interphase (coating) occurs during filtration of steel on the surface of capillaries of ceramics, where content of basic oxidic component decreases. Loss of oxidic component in the coating is replaced by increase of oxides of manganese and iron and it is great extent inversely proportional to the value of Gibbs’ energy of oxide, which forms this initial basis of ceramics.

Keywords

filtration of steel; ceramic filters; interphase reactions; thermodynamic stability of filter

Hrčak ID:

38686

URI

https://hrcak.srce.hr/38686

Publication date:

1.10.2009.

Article data in other languages: croatian

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