Inhibiting the formation of planar defects in grown alumina scale on Ni-Al alloys
Source abstract
Abstract
Twin boundaries and stacking faults (TBs&SFs) in thermally grown oxide scales can deteriorate the oxidation resistance of engineering alloys and it is challenging to inhibit them. Herein, we find that introducing a coherent NiO layer can significantly reduce the TBs&SFs density in γ -Al 2 O 3 scales on Ni-Al alloys and thereby enhance the oxidation resistance . Importantly, such a NiO layer can be spontaneously formed on the surface of a nanograined Ni-7 wt%Al alloy, and its oxidation resistance is three times that of the β -NiAl intermetallics . This provides a novel strategy to develop advanced oxidation resistant materials for high temperature application .
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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