3-D03=3.35t. The electrochemical corrosion and immersion corrosion test results show that the pure Zr with grain size of about 24 μm (annealing at 800 °C for 20 h) possesses the optimal corrosion resistance."/>

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Corrosion Resistance Enhancement of Pure Zirconium in Various Environments via Microstructure Tailoring
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1.Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China;2.Industrial Technology Research Institute, Hebei University of Technology, Tianjin 300401, China;3.Engineering Research Center for Electrophysical Apparatus and Application Technology, Beijing Research Institute of Automation for Machinery Industry Co., Ltd, Beijing 100120, China

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Fund Project:

National Natural Science Foundation of China (52071126); Natural Science Foundation of Tianjin City, China (22JCQNJC01240); Central Guidance on Local Science and Technology Development Fund of Hebei Province (226Z1009G); Special Funds for Science and Technology Innovation in Hebei (2022X19); Foundation Strengthening Program (2019-JCJQ-00)

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    Abstract:

    The corrosion properties of pure zirconium (Zr) with different grain sizes in acid, alkali, and salt environments were studied. The microstructures of pure Zr were observed by optical microscope, X-ray diffractometer, and electron backscattered diffraction probe. The corrosion resistance of pure Zr was analyzed by electrochemical corrosion test and immersion test. Results show that pure Zr with grain size of 4–32 μm can be obtained after annealing at 800 °C for different durations, and the relationship between grain size and annealing duration is D3-D03=3.35t. The electrochemical corrosion and immersion corrosion test results show that the pure Zr with grain size of about 24 μm (annealing at 800 °C for 20 h) possesses the optimal corrosion resistance.

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[Xia Chaoqun, Li Ke, Cui Ziyao, Song Tianshuo, Wu Xinyu, Liu Shuguang, Zou Xianrui, Zhang Shiliang, Yang Tai, Li Qiang. Corrosion Resistance Enhancement of Pure Zirconium in Various Environments via Microstructure Tailoring[J]. Rare Metal Materials and Engineering,2024,53(8):2109~2122.]
DOI：10.12442/j. issn.1002-185X.20230663

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History
  • Received:October 24,2023
  • Revised:December 19,2023
  • Adopted:January 05,2024
  • Online: August 09,2024
  • Published: August 08,2024