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논문 기본 정보

자료유형
학술저널
저자정보
이정형 (목포해양대학교) 정인교 (지마린서비스) 한민수 (목포해양대학교)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제51권 제6호
발행연도
2018.12
수록면
415 - 420 (6page)

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초록· 키워드

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The possibility of an improvement in heat dissipation performance of aluminum alloy heat sink for shipboard LED luminaries through plasma electrolytic oxidation (PEO) was investigated. Four different PEO coatings were produced on aluminum alloy 5052 in silicate based alkaline solution by varying current density (50 ~200 mA/cm²). On voltage-time response curves, three stages were clearly distinguished at all current densities, namely an initial linear increase, slowdown of increase rate, and steady state(constant voltage). It was found that the increase in current density caused the breakdown voltage to increase. Two different surface morphologies – coralline porous structure and pancake structure – were confirmed by SEM examination. The coralline porous structure was predominant in the coatings produced at lower current densities (50 and 100 mA/cm²) while under high current densities(150 and 200 mA/cm²) the pancake structure became dominant. The coating thickness was measured and found to be in a range between about 13 μm and 44 μm, showing increasing thickness with increasing current density. As a result, 100 mA/cm² was proposed as an effective process parameter to improve the heat dissipation performance of aluminum alloy heat sink, which could lower the LED operating temperature by about 30%.

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Abstract
1. 서론
2. 실험방법
3. 결과 및 토론
4. 결론
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UCI(KEPA) : I410-ECN-0101-2019-581-000937536