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Characterization of nickel oxide layers on the AZ91 Mg alloys by plasma electrolytic oxidation
- Issue Date
- Jun-2010
- Publisher
- Trans Tech Publications Ltd.
- Keywords
- Corrosion resistance; Magnesium alloy; Nickel oxide; Plasma electrolytic oxidation
- Citation
- Materials Science Forum, v.654-656, pp 775 - 778
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Materials Science Forum
- Volume
- 654-656
- Start Page
- 775
- End Page
- 778
- ISSN
- 0255-5476
1662-9752
- Abstract
- Characterization of nickel oxide layers on the AZ91 Mg alloys by plasma electrolytic oxidation (PEO) was investigated. For this purpose, PEO coating was carried out on the present sample in the alkaline electrolyte with nickel ion at three different voltage responses, i.e., 150, 250, 350 V. The amount of nickel oxide increased by increasing process time, and changed the color of sample from light grey to moderate olive brown. It was observed from potentio-dynamic polarization analysis that polarization resistance of oxide layer was increased with increasing nickel ions. Also microhardness of the sample processed at 350 V was higher than those of the samples. © (2010) Trans Tech Publications.
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Related Researcher
- Yoo, Bong young
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)