Enhanced oxidation resistance and adhesion performance of Cr–Mo-coated Zry-4 by a thin Cr layer in steam up to 1600 °C

In this study, Cr–Mo–Cr tri-layer coating with Cr inner layer is designed and compared with the pure Cr coating and Cr–Mo bi-layer coating in steam up to 1600 °C. The Cr–Zr interdiffusion is mitigated effectively by Mo layer. The outer Cr 2 O 3 layer of Cr–Mo coating peels off, and Mo–Zr eutectic re...

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Bibliographic Details
Published inJournal of materials science Vol. 59; no. 18; pp. 7913 - 7930
Main Authors Zhu, Chaowen, Sun, Yu, Li, Muhong, Qi, Lin, Shen, Huahai, Chen, Chen, Zeng, Song, Meng, Yan, Zhou, Xiaosong, Han, Xiaochun
Format Journal Article
LanguageEnglish
Published New York Springer US 01.05.2024
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium
Classical Mechanics
Coating
Crack propagation
Crystallography and Scattering Methods
Eutectic reactions
Finite element method
Interdiffusion
Materials Science
Mechanical properties
Metals & Corrosion
Molybdenum
Oxidation
Oxidation resistance
Polymer Sciences
Solid Mechanics
Solid solutions
Steam pressure
Substrates
Temperature
Zirconium
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Summary:In this study, Cr–Mo–Cr tri-layer coating with Cr inner layer is designed and compared with the pure Cr coating and Cr–Mo bi-layer coating in steam up to 1600 °C. The Cr–Zr interdiffusion is mitigated effectively by Mo layer. The outer Cr 2 O 3 layer of Cr–Mo coating peels off, and Mo–Zr eutectic reaction occurs above 1500 °C. Cr–Mo–Cr coating maintains the integrity and protects the Zr substrate from being oxidized. The bond performance is improved by forming Mo–Zr–Cr solid solution. Finite element simulation indicates that the stress in the coating is reduced by 6 GPa in the presence of the inner Cr layer.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-024-09631-3