INTERACTION OF ALUMINIZED 12X18H10T STEEL WITH MOLTEN ALKALI CARBONATES

Interaction of aluminized 12X18H1OT steel with a melt of lithium and p otassium carbonates at 650 degrees C in an atmosphere of CO2 + 1/2O(2) is studied by recording anodic polarization curves and using gravimet ry, chemical analysis, X-ray microspectral analysis, and other methods . Coatings were obtained under various conditions: in the salt melt, f rom the powder mixture, and by immersing the steel in molten aluminum. Variations in the structure of initial coatings are discussed along w ith the correlation between the coating structure and both the protect ive properties of the aluminum-containing layer and its interaction wi th the salt phase.