Comparative study on corrosion behaviour of pure Mg and WE43 alloy in static, stirring and flowing Hank's solution

N. Li, C. Guo, Y. H. Wu, Y. F. Zheng*, L. Q. Ruan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

WE43 magnesium alloy has been considered as a promising candidate material for biodegradable coronary stents. In order to evaluate the effects of blood flow on the corrosion process of biodegradable Mg and its alloys, the corrosion behaviours of as cast pure Mg and as extruded WE43 alloy in Hank's solution under three different conditions, i.e. static, stirring and flowing, were investigated in the present work. We found that the as cast pure Mg exhibited much higher corrosion rate than the as extruded WE43 alloy regardless of the liquid flowing condition of the solution. Both pure Mg and WE43 alloy samples exhibited the lowest corrosion rate under the stirring condition while the flowing condition promoted local corrosion with the corrosion rates three to six times faster. The results of this study suggest that static immersion may be not proper to predict in vivo corrosion rates of magnesium alloy stents.

Original languageEnglish
Pages (from-to)346-351
Number of pages6
JournalCorrosion Engineering Science and Technology
Volume47
Issue number5
DOIs
Publication statusPublished - Aug 2012
Externally publishedYes

Keywords

  • Biodegradable stents
  • Corrosion
  • Flowing condition
  • Magnesium alloys

Fingerprint

Dive into the research topics of 'Comparative study on corrosion behaviour of pure Mg and WE43 alloy in static, stirring and flowing Hank's solution'. Together they form a unique fingerprint.

Cite this