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Electropolishing of titanium alloy under hydrodynamic mode

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Abstract

Titanium (Ti) alloys are widely used in aerospace industry due to the low density and high corrosion resistance. However, machining and polishing remain great challenges because of the hardness and chemical stability. With a home-made electrochemical machining workstation, cyclic voltammetry is performed at a wide potential range of [0 V, 20 V] to record the details of passivation and depassivation processes under a hydrodynamic mode. The results show that the thickness of viscous layer formed on the alloy surface plays a crucial effect on the electropolishing quality. The technical parameters, including the mechanical motion rate, polishing time and electrode gap, are optimized to achieve a surface roughness less than 1.9 nm, which shows a prospective application in the electrochemical machining of Ti and it alloys.

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Authors and Affiliations

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China

    Pei Huang, Junhui Lai, Lianhuan Han, Fang-Zu Yang, Zhao-Wu Tian, Zhong-Qun Tian & Dongping Zhan

  2. School of Material Science and Engineering, Nanchang Hangkong University, Nanchang, 330034, China

    Li-Min Jiang & Jian-Jia Su

Authors
  1. Pei Huang
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  2. Junhui Lai
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  3. Lianhuan Han
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  4. Fang-Zu Yang
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  5. Li-Min Jiang
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  6. Jian-Jia Su
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  7. Zhao-Wu Tian
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  8. Zhong-Qun Tian
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  9. Dongping Zhan
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Corresponding authors

Correspondence to Fang-Zu Yang, Li-Min Jiang or Dongping Zhan.

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Huang, P., Lai, J., Han, L. et al. Electropolishing of titanium alloy under hydrodynamic mode. Sci. China Chem. 59, 1525–1528 (2016). https://doi.org/10.1007/s11426-016-0211-y

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  • DOI: https://doi.org/10.1007/s11426-016-0211-y

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