Corrosion behaviour of Fe-40Al-Zr (at.%) alloy in molten soda-lime glass

The corrosion behaviour of Fe-40Al-Zr (at.%) has been investigated in molten soda-lime glass at 1200 degrees C. The measurement of weight loss and surface change were used for explanation of the corrosion resistance. The alloying by 0.09 at.% Zr reduces the corrosion resistance of Fe-40Al-Zr against molten soda-lime glass in comparison with earlier tested Fe-25Al-5Cr alloy. The corrosion mechanism of Fe-40Al-Zr alloy in molten soda-lime glass was also described. During reactions between tested iron aluminide and glass oxides, Al2O3 was generated and preferential oxidation of Zr-rich precipitates occurred.