Article ID Journal Published Year Pages File Type
617056 Wear 2015 17 Pages PDF
Abstract
At 400 °C and at 700 °C, all wear rates are levelled to ≈8×10−5 mm3/(Nm) and ≈2×10−5 mm3/(Nm), respectively. An oxide layer grows on the NiCrAlY matrix upon high-temperature exposure, resulting in a tribo-oxidation wear mechanism, which makes the addition of Al2O3 irrelevant. At 700 °C, coatings are further strengthened by partial healing of interlamellar defects and by fine-grained β-NiAl precipitating within the metal matrix.
Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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