Corrosion Resistance Of Heat-Resistance Alloys In Molten Lead Crystal At 1200 Degrees C

The important parameter for using heat-resistance alloys in the glass industry is the corrosion resistance of alloys in molten glass. The corrosion resistance of the alloy depends on the chemical composition of the glass and alloy and the temperature. The corrosion tests of iron aluminide Fe14Al5Cr, austenitic steel EN X8CrNi25-21 and nickel alloy were carried out in a lead crystal at 1200 degrees C. The corrosion kinetic of the test alloys was determined by the measurement of weight loss. The changes of sample surface layers were quantified by the surface roughness. The most suitable alloy for application in molten lead crystal is the iron aluminide Fe14Al5Cr. The alloy Fe14Al5Cr has had the lowest weight loss and parameters of roughness, tinted the molten glass at the least. The corrosion resistance of the austenitic steel against the molten lead crystal is also very good.