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The effect of anodizing conditions on the corrosion resistance of Ti6Al4V titanium alloy

  • Magdalena Łępicka , Małgorzata Grądzka-Dahlke und Andrzej Sobolewski
Veröffentlicht/Copyright: 21. April 2015
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Materials Testing
Aus der Zeitschrift Materials Testing Band 57 Heft 5

Abstract

To improve the biocompatibility and operational safety of titanium implants made of Ti6Al4V alloy, anodizing is applied. The anodizing process allows adjustment of the highly biocompatible oxide level on the metallic surface. However, little attention is paid to the influence of the layer thickness on the considered material corrosion resistance. Electrochemical polarization and open circuit potential tests as well as scanning electron microscope, laser confocal microscope and energy-dispersive X-ray studies were performed on as-received samples. Taking all experimental investigations into account, the following conclusions can be formulated: 1. Anodizing of Ti6Al4V alloy results in improvement of its corrosive characteristics. 2. In general, the higher the anodizing voltage is, the worse the anticorrosive properties exhibited by the material. 3. Despite the observed corrosion characteristics, the titanium oxide films obtained by means of the anodizing technique can be severely corroded in 0.9 wt.-% NaCl aqueous solution.

Kurzfassung

Um die Biokompatibilität und operationale Sicherheit von Titanimplantaten aus Ti6Al4V-Legierung zu verbessern, werden diese anodisiert. Der Anodisierungsprozess ermöglicht die Angleichung des hoch-biokompatiblen Oxidniveaus auf der metallischen Oberfläche. Allerdings wird bisher dem Einfluss der Schichtdicke auf den betrachteten Korrosionswiderstand wenig Beachtung geschenkt. Für die diesem Beitrag zugrunde liegende Studie wurden elektrochemische Polarisations- und freie Korrosionsversuche durchgeführt sowie Proben im Lieferzustand mittels Rasterelektronenmikroskop, Laser-Konfokalmikroskop und energiedispersiver Röntgenspektroskopie untersucht. Basierend auf allen experimentellen Untersuchungen können die folgenden Schlüsse gezogen werden: 1. Anodisieren der Ti6Al4V-Legierung führt zu einer Verbesserung ihrer Korrosionseigenschaft. 2. Allgemein gilt, dass je höher die Anodisierungsspannung ist, desto schlechter sind die Antikorrosionseigenschaften des Werkstoffes. 3. Trotz der beobachteten Korrosionseigenschaften können die mittels Anodisierungstechnik aufgebrachten Titanoxidfilme in 0,9 wt.-% wässriger NaCl-Lösung stark korrodiert werden.

§Correspondence Address, Assoc. Prof. Dr. Małgorzata Grądzka-Dahlke, Bialystok University of Technology, Faculty of Mechanical Engineering, Wiejska 45C, 15-351 Bialystok, Poland, E-mail:

Magdalena Łępicka, MSc Eng., born in 1989, studied Biomedical Engineering in Bialystok, Poland from 2008 to 2013. During her Master's degree studies she worked at Medgal sp. z o. o. in Ksiezyno, Poland. Currently, she is a PhD student at the Faculty of Mechanical Engineering, Bialystok University of Technology, Poland. Her main fields of interests are materials for biomedical applications and surface modification methods.

Assoc. Prof. Małgorzata Grądzka-Dahlke, PhD Eng., born in 1959, studied Mechanical Engineering at the Southern Federal University in Rostov-on-Don, Russia and received her PhD in 1986. She worked as a postdoctoral researcher in the Department of Materials and Biomedical Engineering at Bialystok University of Technology, Poland, from 1994 to 2011. She currently works there as an Associate Professor. Since 2012, she holds the position of Vice Dean for Scientific Research of the Faculty of Mechanical Engineering, Bialystok University of Technology, Poland. The focuses of her work are biomaterials, mainly metallic ones, and surface modification issues.

Andrzej Sobolewski, MSc Eng., born in 1975, graduated with honors in Mechanics and Construction Engineering from Bialystok University of Technology, Poland in 2000. He has been employed at ChM sp. z o. o. in Lewickie, Poland since 2001 and currently works there as Head of the Research and Development Department. Based on the identification of market demands, he supervises the research and development processes of new products and projects, making it possible to place new implants on the market along with full surgical instrument kits and surgical techniques.

References

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Published Online: 2015-04-21
Published in Print: 2015-04-30

© 2015, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. Effects of the thickness on the microstructure and corrosion behavior of a TiAlN film on 4140 steel
  5. The effect of anodizing conditions on the corrosion resistance of Ti6Al4V titanium alloy
  6. Frequency analysis of volumetric porosity in aluminum castings at high and low cooling rates
  7. Corrosion resistance of nanosilicasilicate conversion coatings on aluminum prepared by the dip immersion method
  8. Corrosion behavior of Haynes® 556® Fe-Ni-Cr-Co alloy for integrated coal gasification combined cycle syngas plants: A plant exposure study*
  9. Effects of Y2O3 and Al2O3 sintering additives on the hot pressing behavior of AlN ceramics
  10. Einfluss der Klebschichtdicke auf Kopplungsfaktor und Lebensdauer beim Bekleben von piezoelektrischen Flächenwandlern mit Epoxykleber
  11. Influence of the heat treatment on hardness and adhesive wear performance of Ni-P deposit with low phosphorus content
  12. Effect of plasma nitriding time on surface properties of hard chromium electroplated AISI 1010 steel
  13. Diffusion characteristics of plasma nitrided hard chromium on AISI 1010 steel
  14. Estimation of the mechanical properties of nanocomposites based on the properties prediction of single wall carbon nanotubes (SWCNT)
  15. Investigation of joints between polypropylene and polybutylene terephthalate
  16. Parametric optimization of seam welding of stainless steel (SS 304) sheets
  17. Effect of the powder particle size on the wear behavior of boronized AISI 304 stainless steel
  18. Optimum buckling design of axially layered graded uniform columns
  19. Kalender/Calendar
  20. Kalender
https://doi.org/10.3139/120.110725

Artikel in diesem Heft

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. Effects of the thickness on the microstructure and corrosion behavior of a TiAlN film on 4140 steel
  5. The effect of anodizing conditions on the corrosion resistance of Ti6Al4V titanium alloy
  6. Frequency analysis of volumetric porosity in aluminum castings at high and low cooling rates
  7. Corrosion resistance of nanosilicasilicate conversion coatings on aluminum prepared by the dip immersion method
  8. Corrosion behavior of Haynes® 556® Fe-Ni-Cr-Co alloy for integrated coal gasification combined cycle syngas plants: A plant exposure study*
  9. Effects of Y2O3 and Al2O3 sintering additives on the hot pressing behavior of AlN ceramics
  10. Einfluss der Klebschichtdicke auf Kopplungsfaktor und Lebensdauer beim Bekleben von piezoelektrischen Flächenwandlern mit Epoxykleber
  11. Influence of the heat treatment on hardness and adhesive wear performance of Ni-P deposit with low phosphorus content
  12. Effect of plasma nitriding time on surface properties of hard chromium electroplated AISI 1010 steel
  13. Diffusion characteristics of plasma nitrided hard chromium on AISI 1010 steel
  14. Estimation of the mechanical properties of nanocomposites based on the properties prediction of single wall carbon nanotubes (SWCNT)
  15. Investigation of joints between polypropylene and polybutylene terephthalate
  16. Parametric optimization of seam welding of stainless steel (SS 304) sheets
  17. Effect of the powder particle size on the wear behavior of boronized AISI 304 stainless steel
  18. Optimum buckling design of axially layered graded uniform columns
  19. Kalender/Calendar
  20. Kalender
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