Paper Title:
The Growth Process of the PEO Films under Escalating Voltage Waveform
  Abstract

In order to get a clear picture for describing the growth process of plasma electrolytic oxidation coatings under escalating voltage waveform, the characteristics of PEO coatings formed at different reaction stages were systemically investigated. The morphology and corrosion resistance of the films were studied by scanning electron microscope and potentiodynamic polarization curves. The uniform, semi-transparent and better corrosion resistance of the oxide films on the magnesium electrode surface were formed owe to the extended anodizing time at the initial stage under escalating voltage mode. After sparking occurred, generated ceramic coatings were brokedown, melted, cooled and solidified continuously, so the ceramic coatings were uniform and dense. It also exhibited superior corrosion resistance.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
720-723
DOI
10.4028/www.scientific.net/AMR.239-242.720
Citation
L. Wang, W. Fu, L. Chen, "The Growth Process of the PEO Films under Escalating Voltage Waveform", Advanced Materials Research, Vols. 239-242, pp. 720-723, 2011
Online since
May 2011
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Price
$32.00
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