Effects of surface friction treatment on the in vitro release of constituent metals from the biomedical Co-29Cr-6Mo-0.16N alloy

Xiaoyu Wang, Yunping Li, Yuhang Hou, Huakang Bian, Yuichiro Koizumi, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Due to the ignorance by many researchers on the influence of starting microstructure on the metal release of biomedical materials in human body after implant, in this study, the effect of surface friction treatment on the in vitro release of the constituent elements of the biomedical Co-29Cr-6Mo-0.16N (CCM) alloy is investigated for the first time by immersion test in lactic acid solution combined with electron backscatter diffraction, transmission electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy, and inductively coupled plasma atomic emission spectroscopy (ICP-EOS). The results indicate that friction treatment on the as-annealed CCM alloy sample surface leads to a planar strain-induced martensitic transformation (SIMT) on sample surface; this greatly accelerates the release of all the constituent elements and, in particular, that of Co as indicated by the ICP-EOS analysis. This increase can be ascribed to a localized deformation that occurred over the entire sample surface, with the dislocation density being high within the SIMTed phase and low in the alloy matrix.

Original languageEnglish
Pages (from-to)260-268
Number of pages9
JournalMaterials Science and Engineering C
Volume64
DOIs
Publication statusPublished - 2016 Jul 1

Keywords

  • Acid solution
  • Cobalt
  • ICP-EOS
  • Metal release
  • XPS
  • surface friction treatment

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Effects of surface friction treatment on the in vitro release of constituent metals from the biomedical Co-29Cr-6Mo-0.16N alloy'. Together they form a unique fingerprint.

Cite this