Effect of grain morphology on the degradation behavior of Mg-4 wt% Zn alloy in Hank's solution.

Authors :: Jia H
Feng X
Yang Y
Source :: Materials science & engineering. C, Materials for biological applications [Mater Sci Eng C Mater Biol Appl] 2020 Jan; Vol. 106, pp. 110013. Date of Electronic Publication: 2019 Jul 24.
Publication Year :: 2020
Abstract: The degradation behavior of Mg-4 wt% Zn alloy with three different microstructures was examined in Hank's solution at 37 °C by electrochemical measurements and immersion tests in this study. The results show that the sample with cellular structure exhibits a more positive corrosion potential, lower corrosion current density, larger impedance and more protective film than samples with columnar dendritic and equiaxed dendritic structure. The higher corrosion resistance is attributed to the preferred orientation, eliminating susceptible grain boundaries and reduced secondary phases.<br /> (Copyright © 2019. Published by Elsevier B.V.)

Subjects :: Alloys chemistry
Corrosion
Dielectric Spectroscopy
Hydrogen chemistry
Hydrogen metabolism
Magnesium chemistry
Materials Testing
Microscopy, Electron, Scanning
Temperature
Zinc chemistry
Alloys metabolism
Isotonic Solutions chemistry

Language :: English
ISSN :: 1873-0191
Volume :: 106
Database :: MEDLINE
Journal :: Materials science & engineering. C, Materials for biological applications
Publication Type :: Academic Journal
Accession number :: 31753338
Full Text :: https://doi.org/10.1016/j.msec.2019.110013

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