Comparison of the cyclic oxidation behavior of a low expansion Ni+CrAlYSiN nanocomposite and a NiCrAlYSi coating
Source abstract
Abstract
Abstract Ni + CrAlYSiN nanocomposite coatings and NiCrAlYSi coatings were prepared on a nickel-based superalloy K417 by vacuum arc evaporation. Both coatings exhibited excellent cyclic oxidation resistance at 1000 °C for 200 1-h cycles. Cracking/spallation of thermally grown oxide (TGO) scale occurred only on NiCrAlYSi coatings, due to the lower thermal stresses level in the TGO on Ni + CrAlYSiN coatings. An hcp-AlN interlayer eliminated the interdiffusion between the nanocomposite coating and substrate. The thickness of the TGO scale on NiCrAlYSi coatings was twice that of the scale on the AlN/Ni + CrAlYSiN coatings, probably due to the crack and healing effect.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Metal and Thin Film Mechanics · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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