J. Mater. Sci. Technol. ›› 2021, Vol. 66: 202-212.DOI: 10.1016/j.jmst.2020.03.080

• Research Article • Previous Articles     Next Articles

Effect of D-fructose on the in-vitro corrosion behavior of AZ31 magnesium alloy in simulated body fluid

Durga Bhakta Pokharela,b, Liping Wua, Junhua Donga,b,*(), Xin Weia, Ini-Ibehe Nabuk Etima,c, Dhruba Babu Subedia,b, Aniefiok Joseph Umoha,b, Wei Kea   

  1. aShenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
    bSchool of Material Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
    cDepartment of Marine Biology, Akwa Ibom State University, Uyo, Nigeria
  • Received:2019-11-11 Revised:2020-03-17 Accepted:2020-03-30 Published:2021-03-10 Online:2021-04-01
  • Contact: Junhua Dong
  • About author:* Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.E-mail address: jhdong@imr.ac.cn (J. Dong).

Abstract:

The effect of adding d-fructose to simulated body fluid (SBF) on the corrosion behavior of AZ31 magnesium (Mg) alloy at 37 °C and at a pH of 7.4 was studied by potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), potentiostatic polarization and hydrogen (H2) collecting techniques, Raman spectroscopy technique, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy analysis (XPS) and Fourier transformed infrared (FTIR). The results demonstrated that the addition of fructose enhanced the deposition of phosphates forming thick and compact corrosion products, which inhibited the transmission of aggressive ions into the Mg substrate. As a result, both the anodic dissolution of Mg and negative difference effect (NDE) were suppressed. Thus, the corrosion resistance of AZ31 Mg alloy in SBF was significantly improved.

Key words: AZ31 Mg alloy, D-Fructose, SBF, EIS, Hydroxyapatite