Publication detail

PEO of AZ31 Mg Alloy: Effect of Electrolyte Phosphate Content and Current Density

HADZIMA, B. KAJÁNEK, D. JAMBOR, M. DRÁBIKOVÁ, J. BŘEZINA, M. BUHAGIAR, J. PASTORKOVÁ, J. JACKOVÁ, M.

Original Title

PEO of AZ31 Mg Alloy: Effect of Electrolyte Phosphate Content and Current Density

Type

journal article in Web of Science

Language

English

Original Abstract

In this work, the quality of coatings prepared by plasma electrolytic oxidation (PEO) on an AZ31 magnesium alloy were evaluated. This was done by studying the effects of the chemical composition of phosphate-based process electrolytes in combination with different applied current densities on coating thickness, porosity, micro-cracking and corrosion resistance in 0.1 M NaCl. Both processing parameters were studied in four different levels. Mid-term corrosion resistance in 0.1 M NaCl was examined by electrochemical impedance spectroscopy and based on this, corrosion mechanisms were hypothesized. Results of performed experiments showed that the chosen processing parameters and electrolyte composition significantly influenced the morphology and corrosion performance of the prepared PEO coatings. The PEO coating prepared in an electrolyte with 12 g/L Na3PO4 center dot 12H(2)O and using an applied current density 0.05 A/cm(2) reached the highest value of polarization resistance. This was more than 11 times higher when compared to the uncoated counterpart.

Keywords

magnesium alloy; plasma electrolytic oxidation; corrosion

Authors

HADZIMA, B.; KAJÁNEK, D.; JAMBOR, M.; DRÁBIKOVÁ, J.; BŘEZINA, M.; BUHAGIAR, J.; PASTORKOVÁ, J.; JACKOVÁ, M.

Released

17. 12. 2020

Publisher

MDPI

Location

BASEL

ISBN

2075-4701

Periodical

Metals

Year of study

10

Number

11

State

Swiss Confederation

Pages from

1

Pages to

23

Pages count

23

URL

https://www.mdpi.com/2075-4701/10/11/1521

Full text in the Digital Library

http://hdl.handle.net/11012/196451

BibTex

@article{BUT169756,
  author="Branislav {Hadzima} and Daniel {Kajánek} and Michal {Jambor} and Juliána {Drábiková} and Matěj {Březina} and Joseph {Buhagiar} and Jana {Pastorková} and Martina {Jacková}",
  title="PEO of AZ31 Mg Alloy: Effect of Electrolyte Phosphate Content and Current Density",
  journal="Metals",
  year="2020",
  volume="10",
  number="11",
  pages="1--23",
  doi="10.3390/met10111521",
  issn="2075-4701",
  url="https://www.mdpi.com/2075-4701/10/11/1521"
}