Abstract
Improving our fundamental understanding of the oxidation of multicomponent alumina-forming alloys is crucial to their ongoing development. In this work, high-throughput methods were developed to study oxidation of AlxFeyNi1−x−y alloys in dry air at 427°C using composition spread alloy films as combinatorial libraries (x=0→1, y=0→[1−x]). The results divide the AlxFeyNi1−x−y composition space into four regions of phenomenologically distinct oxidation behaviour. The boundary defining the critical Al concentration, NAl∗ (x, y), for establishment of a passivating Al2O3 scale was determined across the entire continuous AlxFeyNi1−x−y composition space.
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