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<p>This study investigates the high-temperature (HT) oxidation resistance and interdiffusion behavior of Cr/Mo thin-layer coatings on Zr-1Nb alloy, aimed at enhancing corrosion resistance in nuclear reactor components. Magnetron sputtered coatings Mo (3&#xa0;μm)/Cr (8&#xa0;μm) demonstrated significant improvements in oxidation resistance at 1100&#xa0;°C. However, coating delamination occurred after 60&#xa0;min, necessitating further optimization. Non-destructive testing (NDT) methods, including four probe point (FPP) resistivity and thermal electromotive force (thermoEMF) analysis, provided real-time insights into coating stability, highlighting their potential for advanced diagnostic applications. The findings suggest Cr/Mo-coated Zr-1Nb alloys as a promising material for accident-tolerant nuclear fuel claddings.</p>

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Electrothermal properties and interdiffusion behavior of Cr/Mo coated Zr-1Nb alloy under high temperature for corrosion resistance of nuclear reactor

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月28日

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  • Abdelrahman M. Salman,
  • Andrey M. Lider

摘要

This study investigates the high-temperature (HT) oxidation resistance and interdiffusion behavior of Cr/Mo thin-layer coatings on Zr-1Nb alloy, aimed at enhancing corrosion resistance in nuclear reactor components. Magnetron sputtered coatings Mo (3 μm)/Cr (8 μm) demonstrated significant improvements in oxidation resistance at 1100 °C. However, coating delamination occurred after 60 min, necessitating further optimization. Non-destructive testing (NDT) methods, including four probe point (FPP) resistivity and thermal electromotive force (thermoEMF) analysis, provided real-time insights into coating stability, highlighting their potential for advanced diagnostic applications. The findings suggest Cr/Mo-coated Zr-1Nb alloys as a promising material for accident-tolerant nuclear fuel claddings.