Effects of On-Time on Microstructure and Corrosion Resistance of Pulse-Micro-Arc Oxidation Coatings Formed on Titanium Alloy

Abstract:

Titanium dioxide (TiO2) has widely been applied in various fields of industry and technology. To improve the corrosion resistance of TiO2, many manufacturing processes have been researched. MAO is a new method of the TiO2 manufacturing process, of which titanium dioxide is coated on titanium substrate. According to electrochemistry researches, there is a more superior level for Pulse-MAO than traditional MAO. Parameters of on-time were significant in the Pulse-MAO process. The results show that on-time affects reactant shape, morphologies, thickness of films, and corrosion resistance. When on-time increased, the size of reactants was bigger and the shape of reactants was changed from sphere to lump. Meanwhile, the corrosion resistance and thickness of the film increased.

• Periodical: Advanced Materials Research (Volume 845)
• Pages: 735-739
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.845.735
• Online since: December 2013
• Authors: Yen Shou Chen*, Yao Yang Tsai
• Keywords: Micro-Arc Oxidation, On-Time, Pulse, Titanium

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