Effects of electrolyte composition on the process of conversion of aluminium foil in to alumina ceramics by plasma electrolytic oxidation
Joint Authors
Meshreghi, Husayn
Yerokhin, Aleksey
Matthews, Allan
Source
The International Journal of Engineering and Information Technology
Issue
Vol. 6, Issue 2 (30 Jun. 2020), pp.175-182, 8 p.
Publisher
Misurata University Faculty Engineering
Publication Date
2020-06-30
Country of Publication
Libya
No. of Pages
8
Main Subjects
Abstract EN
Alumina thick and thin films can be used for a variety of purposes, including the semiconductors, electronics, substrate and dielectric, piezoelectric and ferromagnetic devices.
The films can be produced by conventional methods such as tape casting and roll compaction from ceramic slurry.
However, these methods offer limited part geometries and cause defects in the film structure.
Plasma electrolytic oxidation is a novel surface engineering technology, allowing relatively thin and thick oxide coatings to be formed on metals.
Alumina ceramics were produced by conversion of a rectangular shape aluminium foil (30 x 15 x 0.05 mm) using a plasma electrolytic oxidation technique.
To achieve better understanding of the coating formation on the foil substrates the plasma electrolytic oxidation (PEO) process was carried out for 6 minutes in electrolytes containing various proportions of alkali, silicate and phosphate salts.
The influence of the electrolyte constituents on the coating thickness, morphology of the process conversion of aluminium foil in to alumina ceramics to obtain alumina ceramics with a moderate degree of flexibility were studied.
Preliminary results indicate that the thickest coating corresponding to conversion of about 70% of Al foil to alumina ceramics, with residual aluminium foil thickness of around 20 ^m, has been achieved in electrolyte (1.25 g/l KOH, 2.0 g/l Na4P2O7, 2.0 g/l Na2SiO3).
The increase of potassium hydroxide concentration leads the discharge phenomena to occur at lower voltages.
Moreover, the addition of silicate in the electrolyte can increase the activity of discharge as well as coating surface roughness.
American Psychological Association (APA)
Meshreghi, Husayn& Yerokhin, Aleksey& Matthews, Allan. 2020. Effects of electrolyte composition on the process of conversion of aluminium foil in to alumina ceramics by plasma electrolytic oxidation. The International Journal of Engineering and Information Technology،Vol. 6, no. 2, pp.175-182.
https://search.emarefa.net/detail/BIM-1462144
Modern Language Association (MLA)
Meshreghi, Husayn…[et al.]. Effects of electrolyte composition on the process of conversion of aluminium foil in to alumina ceramics by plasma electrolytic oxidation. The International Journal of Engineering and Information Technology Vol. 6, no. 2 (Jun. 2020), pp.175-182.
https://search.emarefa.net/detail/BIM-1462144
American Medical Association (AMA)
Meshreghi, Husayn& Yerokhin, Aleksey& Matthews, Allan. Effects of electrolyte composition on the process of conversion of aluminium foil in to alumina ceramics by plasma electrolytic oxidation. The International Journal of Engineering and Information Technology. 2020. Vol. 6, no. 2, pp.175-182.
https://search.emarefa.net/detail/BIM-1462144
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-1462144