Influence of process time on microstructure and electrochemical characteristics of ceramic oxide coating produced on Al alloy by pulsed plasma electrolytic oxidation
Plasma electrolytic oxidation of Al alloy 5083-O was carried out in a dilute alkaline electrolyte with a unipolar pulsed DCcondition. The coatings were fabricated with different process time (10, 20, 30 and 40 min) and were characterized for surfacemorphology, phase composition, and corrosion resist...
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| Published in | Journal of Ceramic Processing Research, 17(8) pp. 831 - 836 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
세라믹연구소
01.08.2016
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| Subjects | |
| Online Access | Get full text |
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| Summary: | Plasma electrolytic oxidation of Al alloy 5083-O was carried out in a dilute alkaline electrolyte with a unipolar pulsed DCcondition. The coatings were fabricated with different process time (10, 20, 30 and 40 min) and were characterized for surfacemorphology, phase composition, and corrosion resistance. It was found that increasing process time resulted in an increase inthickness of the coating. However, longer duration of coating period did not result in an improvement of corrosion resistance.
In this study, 10 min of process time is determined to be the optimum condition to improve corrosion resistance, resulting intwo orders of magnitude lower corrosion current density compared to the substrate. KCI Citation Count: 0 |
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| ISSN: | 1229-9162 2672-152X |