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Effect of hydrogen on the integrity of aluminium–oxide interface at elevated temperatures

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  • Meng Li

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University)

  • De-Gang Xie

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University)

  • Evan Ma

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
    Johns Hopkins University)

  • Ju Li

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
    Massachusetts Institute of Technology)

  • Xi-Xiang Zhang

    (King Abdullah University of Science & Technology)

  • Zhi-Wei Shan

    (Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University)

Abstract

Hydrogen can facilitate the detachment of protective oxide layer off metals and alloys. The degradation is usually exacerbated at elevated temperatures in many industrial applications; however, its origin remains poorly understood. Here by heating hydrogenated aluminium inside an environmental transmission electron microscope, we show that hydrogen exposure of just a few minutes can greatly degrade the high temperature integrity of metal–oxide interface. Moreover, there exists a critical temperature of ∼150 °C, above which the growth of cavities at the metal–oxide interface reverses to shrinkage, followed by the formation of a few giant cavities. Vacancy supersaturation, activation of a long-range diffusion pathway along the detached interface and the dissociation of hydrogen-vacancy complexes are critical factors affecting this behaviour. These results enrich the understanding of hydrogen-induced interfacial failure at elevated temperatures.

Suggested Citation

  • Meng Li & De-Gang Xie & Evan Ma & Ju Li & Xi-Xiang Zhang & Zhi-Wei Shan, 2017. "Effect of hydrogen on the integrity of aluminium–oxide interface at elevated temperatures," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14564
    DOI: 10.1038/ncomms14564
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    Cited by:

    1. Yuecun Wang & Xudong Wang & Jun Ding & Beiming Liang & Lingling Zuo & Shaochuan Zheng & Longchao Huang & Wei Xu & Chuanwei Fan & Zhanqiang Duan & Chunde Jia & Rui Zheng & Zhang Liu & Wei Zhang & Ju Li, 2024. "Inward motion of diamond nanoparticles inside an iron crystal," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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