Work

Structure controlling strategy towards the high-temperature oxidation in multilayered coatings: an experience from Cr/CrAlN system

Year: 2025

Type: article

Abstract: Cr/CrAlN multilayered coatings with layer thickness h ranging within 20–500 nm were prepared on Zircaloy-4 and then oxidized in a 1000 °C steam environment. The oxidation resistance of coatings improved significantly with the increasing h , which is derived from the evolution of surface oxides from Cr 2 O 3 to α-Al 2 O 3 . Larger h can provide a better barrier effect for Al diffusion and help maintain a locally higher Al concentration near the surface, which is favorable for the formation of an α-Al 2 O 3 layer. The oxidation process was analyzed to deepen the understanding of the oxidation behavior in this and other similar systems.

Source: npj Materials Degradation

DOI: 10.1038/s41529-025-00570-1

Authors: J. D. Zuo, Y. Q. Wang, Q. Y. Sun, J. Y. Zhang, G. Liu, J. Sun

Institution: Xi'an Jiaotong University

Language: English

Topic: High-Temperature Coating Behaviors

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,590

Funders: National Natural Science Foundation of China, Xi’an Jiaotong University, China Postdoctoral Science Foundation, Fundamental Research Funds for the Central Universities