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ULTRASONIC CAVITATION EROSION-CORROSION BEHAVIOR OF NiTi CLADDINGS WITH Ni AND Cu INTERLAYER

Author

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  • ZHENPING SHI

    (Metals and Chemistry Research Institute of China Academy of Railway Sciences, Beijing 100081, P. R. China)

  • ZHENGBIN WANG

    (��CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China)

  • YANXIN QIAO

    (��School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China)

  • TAO WANG

    (Metals and Chemistry Research Institute of China Academy of Railway Sciences, Beijing 100081, P. R. China)

  • YUGUI ZHENG

    (��CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China)

Abstract

The NiTi claddings by tungsten inert gas (TIG) with Ni and Cu interlayer were manufactured to resist the cavitation erosion-corrosion (CEC). The cavitation test, the open circuit potential and the potentiodynamic polarization measurements were used to study the synergistic effect among cavitation erosion (CE) and corrosion for the NiTi claddings. After the CEC test for 11h, the cumulative mass loss of 304 stainless steel is 5 and 1.15 times that of NiTi-Ni-TIG cladding and NiTi-Cu-TIG cladding, respectively. In NiTi-Cu-TIG cladding, the galvanic corrosion between the Cu-Ti intermetallics and the B2 phase causes the anodic dissolution of the Cu-Ti intermetallics, and results in the B2 phase losing support and spalling off during the CEC test. In contrast, NiTi-Ni-TIG cladding can be used against the CEC because of its uniform microstructure, no Cu-rich area and the effect of corrosion on CE of NiTi-Ni-TIG cladding is small.

Suggested Citation

  • Zhenping Shi & Zhengbin Wang & Yanxin Qiao & Tao Wang & Yugui Zheng, 2025. "ULTRASONIC CAVITATION EROSION-CORROSION BEHAVIOR OF NiTi CLADDINGS WITH Ni AND Cu INTERLAYER," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 32(05), pages 1-11, May.
    • Handle: RePEc:wsi:srlxxx:v:32:y:2025:i:05:n:s0218625x22400029
    DOI: 10.1142/S0218625X22400029
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