Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electrolyte influence on ignition of plasma electrolytic oxidation processes on light metals
Materials and Surface Engineering Group, Chemnitz University of Technology, Institute of Materials Science and Engineering, Chemnitz, Germany.ORCID iD: 0000-0002-7120-1489
2017 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 315, p. 205-213Article in journal (Refereed) Published
Abstract [en]

Plasma electrolytic oxidation (PEO), also called plasma anodizing or micro arc oxidation (MAO), is an appropriate method to improve surface characteristics of valve metals. Micro arc discharges, which appear at the working piece in an aqueous electrolyte under strong anodic polarization, are typical for this process. The discharge initiation is discussed controversially. Contradicting theories, which are mainly based on investigations of tantalum, exist concerning the meaning of electrolytic anions, which are initially incorporated in the anodic film. Dual step polarization and PEO experiments were carried out on aluminum, magnesium, and titanium, which are in practical use as lightweight construction materials. For Al 99.5, AZ31, and TiAl6V4 it could be shown that the incorporation of electrolytic anions in the anodic film is not required for the ignition process. Also, the influence of electrolyte conductivity on the ignition voltage was investigated by polarization experiments with silicate, aluminate, and hydroxide solutions using the example of AZ31. It has been demonstrated that not the electrical electrolyte conductivity, but its specific electron injection ability at the electrolyte/substrate interface defines the ignition voltage. This injection ability depends on the kind and concentration of the electrolytic anions.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 315, p. 205-213
Keywords [en]
Aluminum, Magnesium, Plasma electrolytic oxidation, Titanium, Voltammetry, Electric discharges, Electrolysis, Ions, Metallic films, Oxidation, Polarization, Silicates, Aqueous electrolyte, Discharge initiation, Electrolyte conductivity, Hydroxide solutions, Light-weight constructions, Polarization experiments, Surface characteristics, Electrolytes
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-51163DOI: 10.1016/j.surfcoat.2017.02.041ISI: 000399268100023Scopus ID: 2-s2.0-85013168646OAI: oai:DiVA.org:hj-51163DiVA, id: diva2:1507583
Available from: 2020-12-08 Created: 2020-12-08 Last updated: 2020-12-08Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Sieber, Maximilian

Search in DiVA

By author/editor
Sieber, Maximilian
In the same journal
Surface & Coatings Technology
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 21 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf