Publication detail

Effects of reagent purity on plasma electrolytic oxidation of titanium in an aluminate–phosphate electrolyte

ALIASGHARI, S. NĚMCOVÁ, A. ČÍŽEK, J. GHOLINIA, A. SKELDON, P. THOMPSON, G.

Original Title

Effects of reagent purity on plasma electrolytic oxidation of titanium in an aluminate–phosphate electrolyte

Type

journal article in Web of Science

Language

English

Original Abstract

The effect of reagent purity on AC plasma electrolytic oxidation of titanium in aluminate–phosphate-based electrolytes has been studied under constant rms current conditions. The resultant coatings were examined by high-resolution electron microscopy and X-ray diffraction, revealing rutile, Al2TiO5, alpha-Al2O3 and gamma-Al2O3, with an aluminium-enriched outer region and phosphorus-enriched band near the coating base. A lower purity of the electrolyte led to an erratic voltage response and delamination of coating material in scratch tests. A thin chlorine-enriched region near the substrate, attributed to the inward migration of chloride ions during coating growth, is suggested to be the cause of the delamination. Deliberate additions of chloride to the electrolyte resulted in highly porous coatings.

Keywords

Titanium, Plasma electrolytic oxidation, Electron microscopy

Authors

ALIASGHARI, S.; NĚMCOVÁ, A.; ČÍŽEK, J.; GHOLINIA, A.; SKELDON, P.; THOMPSON, G.

Released

8. 3. 2016

Publisher

Taylor & Francis

Location

United Kingdom

ISBN

0020-2967

Periodical

TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING

Year of study

94

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

32

Pages to

42

Pages count

11

URL

http://www.tandfonline.com/doi/full/10.1080/00202967.2015.1121692

BibTex

@article{BUT122852,
  author="Sepideh {Aliasghari} and Aneta {Němcová} and Jan {Čížek} and Ali {Gholinia} and Peter {Skeldon} and George {Thompson}",
  title="Effects of reagent purity on plasma electrolytic oxidation of titanium in an aluminate–phosphate electrolyte",
  journal="TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING",
  year="2016",
  volume="94",
  number="1",
  pages="32--42",
  doi="10.1080/00202967.2015.1121692",
  issn="0020-2967",
  url="http://www.tandfonline.com/doi/full/10.1080/00202967.2015.1121692"
}