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Electrochemical behavior of additive manufactured TC4 alloy in different concentrated NaCl solutions

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Abstract

The corrosion behavior and transpassive dissolution properties of TC4 alloy produced by additive manufacturing technology via the laser cladding deposition method were investigated in static NaCl solutions with concentrations of 3.5, 10, and 15 wt%. The corrosion resistance exhibited nonlinear characteristics with respect to the various NaCl concentrations, but the passive film formed on the surface decreased with increasing NaCl concentrations. Simultaneously, transpassive dissolution properties and morphologies were evidently affected by the concentration of NaCl. The mechanism of the anodic dissolution behavior and film evolution under different Cl− concentrations were discussed based on the relevant electrochemical tests and point defects model.

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Acknowledgements

The research was supported under the National Natural Science Foundation of China (Nos. 52105387, 52105197), the China Postdoctoral Science Foundation (No. 2021M692349), the Natural Science Research Projects of General Universities in Jiangsu Province (Nos. 21KJB460019, 21KJB460025), and the Hong Kong Scholars Program (No. XJ2021032). This work was also supported by the 23rd batch of extracurricular academic research fund projects for college students of Soochow University.

Funding

Funding was provided by the National Natural Science Foundation of China (52105387).

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Author notes

  1. Jiaqiang Li and Qilong Han have contributed equally to this work.

Authors and Affiliations

  1. School of Mechanical and Electric Engineering, Soochow University, Suzhou, 215021, China

    Jiaqiang Li, Qilong Han, Zexin Yu, Gangxian Zhu, Wei Xu & Shihong Shi

  2. School of Optoelectronic Science and Technology, Soochow University, Suzhou, 215000, China

    Yibo Zou

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  1. Jiaqiang Li
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  2. Qilong Han
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  6. Wei Xu
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  7. Shihong Shi
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Correspondence to Yibo Zou or Zexin Yu.

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Li, J., Han, Q., Zou, Y. et al. Electrochemical behavior of additive manufactured TC4 alloy in different concentrated NaCl solutions. J Appl Electrochem 52, 1419–1431 (2022). https://doi.org/10.1007/s10800-022-01714-w

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  • DOI: https://doi.org/10.1007/s10800-022-01714-w

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