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논문 기본 정보

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학술저널
저자정보
Mukesh Kumar Sharma (서울시립대학교) Youngjoo Jang (서울시립대학교) Jongmin Kim (아프로알앤디) Hyungtae Kim (아프로알앤디) Jae Pil Jung (서울시립대학교)
저널정보
대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌 第32卷 第3號
발행연도
2014.6
수록면
27 - 33 (7page)

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초록· 키워드

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This paper presents a brief summary on a relatively new plasma aided electrolytic surface treatment process for light metals. A brief discussion regarding the advantages, principle, process parameters and applications of this process is discussed. The process owes its origin to Sluginov who discovered an arc discharge phenomenon in electrolysis in 1880. A similar process was studied and developed by Markov and coworkers in 1970s who successfully deposited an oxide film on aluminium. Several investigation thereafter lead to the establishment of suitable process parameters for deposition of a crystalline oxide film of more than 100μm thickness on the surface of light metals such as aluminium, titanium and magnesium. This process nowadays goes by several names such as plasma electrolytic oxidation (PEO), micro-arc oxidation (MOA), anodic spark deposition (ASD) etc. Several startups and surface treatment companies have taken up the process and deployed it successfully in a range of products, from military grade rifles to common off road sprockets. However, there are certain limitations to this technology such as the formation of an outer porous oxide layer, especially in case of magnesium which displays a Piling Bedworth ratio of less than one and thus an inherent non protective oxide. This can be treated further but adds to the cost of the process. Overall, it can be said the PEO process offers a better solution than the conventional coating processes. It offers advantages considering the fact that he electrolyte used in PEO process is environmental friendly and the temperature control is not as strict as in case of other surface treatment processes.

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Abstract
1. Introduction
2. Principle of Plasma Electrolytic Oxidation
3. Parameters affecting the Plasma Electrolytic Oxidation process
4. Applications of Plasma Electrolytic Oxidation
5. Conclusions
References

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