Science China Chemistry

, Volume 59, Issue 11, pp 1525–1528 | Cite as

Electropolishing of titanium alloy under hydrodynamic mode

Communications

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.

Keywords

electrochemical machining electropolishing titanium alloy hydrodynamic viscous layer 

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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina
  2. 2.School of Material Science and EngineeringNanchang Hangkong UniversityNanchangChina

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