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Article: New ceramic processing research study findings have been published by scientists at Changwon National University.
- Article from:
- Journal of Technology
- Article date:
- November 3, 2009
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According to recent research from South Korea, "Ceramic coatings have been produced on 6061 Al alloy substrates in a weak alkaline-silicon electrolyte under different AC voltage at 60 Hz combined with a 200 V DC voltage for 5 minutes by a plasma electrolytic oxidation process."
"The surface morphology, composition, structure and microhardness analysis of layers were carried out by an X-ray diffractormetor, optical microscopy, scanning electron microscopy, an energy dispersive X-ray spectrometer and a microhardness tester. Analysis shows that a two-layer structure coating consist of different states of alpha-Al2O3, beta-Al2O3 and gamma-Al2O3, where Si concentrates ...