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Corrosion degradation behavior of Mg-Ca alloy with high Ca content in SBF

Journal Article


Abstract


  • The corrosion degradation behavior of a Mg-Ca alloy with high Ca content aiming for a potential bone repair material in the simulated body fluid (SBF) was investigated. The microstructure and phase constitution of the pristine Mg-30% Ca (mass fraction) alloy were characterized with scanning electron microscopy (SEM) and X-ray diffraction (XRD). The Mg-30% Ca alloy samples were immersed in the SBF for 90 d, and the morphology, composition and cytotoxicity of the final corrosion product were examined. It is found that Mg-30% Ca alloy is composed of alpha-Mg and Mg2Ca phases. During the corrosion process in the SBF, the Mg2Ca phase acts as an anode and the alpha-Mg phase acts as a cathode. The final corrosion product of the Mg-30% Ca alloy in SBF includes a small amount of black precipitates and white suspended particles. The white suspended particles are Mg(OH)(2) and the black particles are believed to have a core-shell structure. The cytotoxicity experiments indicate that these black precipitates do not induce toxicity to cells.

Authors


  •   Liu, Yi-Chi (external author)
  •   Liu, De-Bao (external author)
  •   Zhao, Yue
  •   Chen, Minfang (external author)

Publication Date


  • 2015

Citation


  • Liu, Y., Liu, D., Zhao, Y. & Chen, M. (2015). Corrosion degradation behavior of Mg-Ca alloy with high Ca content in SBF. Nonferrous Metals Society of China Transactions, 25 (10), 3339-3347.

Scopus Eid


  • 2-s2.0-84955250911

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4860

Number Of Pages


  • 8

Start Page


  • 3339

End Page


  • 3347

Volume


  • 25

Issue


  • 10

Abstract


  • The corrosion degradation behavior of a Mg-Ca alloy with high Ca content aiming for a potential bone repair material in the simulated body fluid (SBF) was investigated. The microstructure and phase constitution of the pristine Mg-30% Ca (mass fraction) alloy were characterized with scanning electron microscopy (SEM) and X-ray diffraction (XRD). The Mg-30% Ca alloy samples were immersed in the SBF for 90 d, and the morphology, composition and cytotoxicity of the final corrosion product were examined. It is found that Mg-30% Ca alloy is composed of alpha-Mg and Mg2Ca phases. During the corrosion process in the SBF, the Mg2Ca phase acts as an anode and the alpha-Mg phase acts as a cathode. The final corrosion product of the Mg-30% Ca alloy in SBF includes a small amount of black precipitates and white suspended particles. The white suspended particles are Mg(OH)(2) and the black particles are believed to have a core-shell structure. The cytotoxicity experiments indicate that these black precipitates do not induce toxicity to cells.

Authors


  •   Liu, Yi-Chi (external author)
  •   Liu, De-Bao (external author)
  •   Zhao, Yue
  •   Chen, Minfang (external author)

Publication Date


  • 2015

Citation


  • Liu, Y., Liu, D., Zhao, Y. & Chen, M. (2015). Corrosion degradation behavior of Mg-Ca alloy with high Ca content in SBF. Nonferrous Metals Society of China Transactions, 25 (10), 3339-3347.

Scopus Eid


  • 2-s2.0-84955250911

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4860

Number Of Pages


  • 8

Start Page


  • 3339

End Page


  • 3347

Volume


  • 25

Issue


  • 10