Ni- and Co-Based Superalloys and their Coatings

Cormier, Jonathan

doi:10.3390/met8121055

Metals

2018

DOI: 10.3390/met8121055

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Ni- and Co-Based Superalloys and their Coatings

Jonathan Cormier

Abstract: Nickel- and Cobalt-based superalloys are state-of-the art materials for the manufacturing of components in the hottest sections of aero-engines and land-based power generation gas turbines. [...]

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2022

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Effect of Water Vapor on the Microstructure of Al2O3 on the Free-Standing MCrAlY Alloy at 1100 °C

Zheng

Zhang

et al. 2022

Metals

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The oxidation resistance of the MCrAlY binding coat is due to the formation of protective Al2O3 oxide scale at high temperature. The oxidation behavior of NiCrAlYHf alloy in 1100 °C air and air-water vapor atmosphere was studied. The effect of water vapor on the microstructure and distribution of reactive elements was discussed. The results showed that the oxide scale in air has a double layer structure composed of columnar and equiaxed crystals, while the oxide scale in water vapor contains fine alumina grains, which provides more channels for the diffusion of reactive elements. In addition, The Cr element in the oxide scale is mainly concentrated in the outer equiaxed crystal zone, and the Hf oxide is mainly concentrated in the columnar crystal boundary. In air-water vapor atmosphere, the Cr element is uniformly distributed in the oxide scale.

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Effect of Water Vapor on the Microstructure of Al2O3 on the Free-Standing MCrAlY Alloy at 1100 °C

Zheng

Zhang

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

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Ni- and Co-Based Superalloys and their Coatings

Abstract: Nickel- and Cobalt-based superalloys are state-of-the art materials for the manufacturing of components in the hottest sections of aero-engines and land-based power generation gas turbines. [...]

Cited by 1 publication

References 7 publications

Effect of Water Vapor on the Microstructure of Al2O3 on the Free-Standing MCrAlY Alloy at 1100 °C

Effect of Water Vapor on the Microstructure of Al2O3 on the Free-Standing MCrAlY Alloy at 1100 °C

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