Electropolishing of titanium alloy under hydrodynamic mode
| Autor: | Li-Min Jiang, Lianhuan Han, Dongping Zhan, Junhui Lai, Fang-Zu Yang, Zhong-Qun Tian, Pei Huang, Jian-Jia Su, Zhao-Wu Tian |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Passivation Metallurgy Titanium alloy chemistry.chemical_element Polishing 02 engineering and technology General Chemistry Electrochemical machining 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electropolishing Machining chemistry Surface roughness 0210 nano-technology Titanium |
| Zdroj: | Science China Chemistry. 59:1525-1528 |
| ISSN: | 1869-1870 1674-7291 |
| DOI: | 10.1007/s11426-016-0211-y |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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