Abstract
This study investigates reactions of FeCr alloys (containing 5, 30, 70 and 95at.% Cr) with liquid zinc for annealing times up to 1224h. Simple layered structure was observed at interfaces of Fe–5Cr/Zn and Fe–95Cr/Zn. However, alternating layers were found at interfaces of Fe–30Cr/Zn and Fe–70Cr/Zn. Thickness of the alternating layers varies linearly with square root of time, indicating that growth kinetic of the alternating layers is a diffusion controlled process. Periodic thermodynamic instability at the Fe–30Cr/(Cr) or Fe–70Cr/(Cr) interface causes the subsequent nucleation of new alternating layer pairs. The thermodynamic foundation and mechanism of formation of the alternating layers are elaborated in this paper.
Published Version
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