Oxidation mechanism of Ni+CrAlYNO nanocomposite coating enhanced by a NiCrAlY buffer layer
Source abstract
Abstract
Abstract Comparative investigation on the oxidation behavior at 1000 °C of a nanocrystalline duplex coating, which comprised outer Ni + CrAlYNO cermet and inner NiCrAlY layers, a monolayer NiCrAlY coating and a monolayer cermet coating was carried out. The oxidation rates of the duplex coating are the lowest, because non-alumina oxides were detected on both monolayer coatings though α-Al2O3 was formed on all three coatings. The improved oxidation resistance of the duplex coating is attribute to the uphill diffusion of Al from the NiCrAlY layer to the TGO-cermet interface, driven by reactions of 2AlN+3O→Al2O3+2 N and N + Al→AlN.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Advanced materials and composites · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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