Year: 2014
Type: article
Abstract: Plasma electrolytic oxidation (PEO) processing of EV31 magnesium alloy has been carried out in fluoride containing electrolyte under bipolar pulse current regime. Unusual PEO cathodic micro-discharges have been observed and investigated. It is shown that the cathodic micro-discharges exhibit a collective intermittent behavior, which is discussed in terms of charge accumulations at the layer/electrolyte and layer/metal interfaces. Optical emission spectroscopy is used to determine the electron density (typ. 1015 cm−3) and the electron temperature (typ. 7500 K) while the role of F− anions on the appearance of cathodic micro-discharges is pointed out.
Source: Applied Physics Letters
DOI: 10.1063/1.4866425
Authors: A. Nominé, J. Martin, C. Noël, G. Henrion, T. Belmonte, I. V. Bardin, V. L. Kovalev, A. G. Rakoch
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2082878331