Abstract
A comparative microstructural analysis of the scale formed on the NiAl–Re detonation coating shows that the mechanism of its high-temperature oxidation can be changed with preliminary magnetic abrasive treatment (MAT). The scale formed over the NiAl–Re coating in ordinary conditions includes several layers (NiO–NiAl2O4–Al2O3), while the scale formed on the MAT coating consists of an Al2O3 monolayer with spinel inclusions. The differences in the oxidation of the NiAl and NiAl–Re coatings after MAT are attributed to changes in their dislocation structure.
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