The refractory linings installed in melting furnaces in the secondary aluminum industry are concurrently subjected to corrosive attack from molten aluminum and to mechanical wear, e.g. by impact of solid aluminum or during furnace cleaning. For a reliable prediction of the refractories performance during industrial use, it is vital to consider the interaction of those two different degradation processes. Therefore, a laboratory testing procedure that generates corrosive attack by molten AlMg5, followed by mechanical wear by particle impingement at 850 °C on the same sample specimen, was established and applied on two different refractory brick materials and two different refractory castables. The influence of the corrosive attack on the mechanical wear resistance was investigated by comparing the remaining erosion resistance of the samples after interaction with AlMg5 with their erosion resistance in their original condition. The mechanisms by which corrosive attack of the aluminum alloy affects the erosion resistance of refractories were investigated extensively by SEM.
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