Preparation of MAO Ceramic Coating on Ti-6Al-4V Alloy Surface

Si Rong Yu; Qiang Yao; Hong Chao Chu

doi:10.4028/www.scientific.net/MSF.789.443

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HomeMaterials Science ForumMaterials Science Forum Vol. 789Preparation of MAO Ceramic Coating on Ti-6Al-4V...

Preparation of MAO Ceramic Coating on Ti-6Al-4V Alloy Surface

Abstract:

Micro-arc oxidation (MAO) technology was applied for preparing ceramic coating on Ti alloy. The ceramic coating was characterized using X-ray diffraction, surface roughness meter, eddy current thickness meter, and confocal microscopy. The effects of the current density, the duty cycle and the oxidation time on the thickness and roughness of the ceramic coating were examined. The polarization curves of Ti alloy surface were measured before and after MAO treatment using electrochemical workstation. The results show that the phases of the ceramic coating mainly consist of Ti element, rutile and anatase. With the increase of the current density, the duty cycle and the oxidation time, both thickness and roughness of the ceramic coating increase. After MAO treatment, the corrosion current of Ti alloy decreases, the corrosion potential increases, and the corrosion resistance is improved.

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Periodical:

Materials Science Forum (Volume 789)

Pages:

443-448

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.789.443

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Online since:

April 2014

Authors:

Si Rong Yu*, Qiang Yao, Hong Chao Chu

Keywords:

Ceramic Coating, Corrosion Resistance, Micro-Arc Oxidation, Ti-6Al-4V Alloy

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References

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