Design of Scanning Micro-Arc Oxidation Forming Ceramic Coatings on 2024 Aluminium Alloy

Peng Xiang Lv; Guan Xin Chi; Dong Bo Wei; Shi Chun Di

doi:10.4028/www.scientific.net/AMR.189-193.1296

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193Design of Scanning Micro-Arc Oxidation Forming...

Design of Scanning Micro-Arc Oxidation Forming Ceramic Coatings on 2024 Aluminium Alloy

Abstract:

Micro-arc oxidation (MAO), also called plasma electrolytic oxidation (PEO), anodic spark deposition (ASD), or micro-arc discharge oxidizing (MDO), is an effective surface treatment technique which come from anodic oxidation technology. Via increasing the anodic voltage breaking through faraday area to a high stage accompanied by micro-arc discharge phenomenon, It indicated the ceramic coatings thickness increase along with the scanning times increase, while the thickness increment reduces. The phase composition, morphology and element distribution was studied by X-ray diffraction, scanning electron microscopy and line scanning. The morphology of the ceramic coatings shows it divided into compact layer and loose layer. And it composes of α-Al₂O₃ and γ-Al₂O₃.

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Periodical:

Advanced Materials Research (Volumes 189-193)

Pages:

1296-1300

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.1296

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Online since:

February 2011

Authors:

Peng Xiang Lv, Guan Xin Chi, Dong Bo Wei, Shi Chun Di

Keywords:

Aluminium Alloy, Ceramic Coating, Coating Thickness, Discharge Cannel, Scanning Micro-Arc Oxidation

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