Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 96, Issue -, Pages 831-840Publisher
ELSEVIER
DOI: 10.1016/j.msec.2018.11.037
Keywords
Magnesium; Corrosion evolution; Electrochemical properties; Immersion process; Mg-3.0Gd-2.7Zn-0.4Zr-0.1Mn; Hanks' solution
Categories
Funding
- 'Preparation of a New Generation of Medical Implant Materials and its Engineering Research' in China [2013440002091065]
- project 'Open Funds of National Engineering Research Center of Near-Net Shape Forming for Metallic Materials' in China [2018003]
Ask authors/readers for more resources
Electrochemical measurements and immersion tests were adopted to investigate corrosion mechanism of the as cast and as-extruded Mg-3.0Gd-2.7Zn-0.4Zr-0.1Mn (GZKM-1) alloys. Results of immersion tests indicate that corrosion resistance of the as-extruded GZKM-1 alloy is better. Galvanic corrosion between alpha-Mg matrix and beta-(MgZn)(3)Gd compounds is the main corrosion mechanism of the two GZKM-1 alloys. Larger alpha-Mg peeled off from the as-cast samples, then expanded corrosion reaction along discontinuous beta-(MgZn)(3)Gd compounds making a pit corrosion phenomenon in macro view. Granular beta-(MgZn)(3)Gd or precipitations fell off from the as-extruded samples, and then expanded corrosion reaction along the concentration of the particle beta-(MgZn)(3)Gd (and/or precipitations). Most areas of the as-extruded alloy are protected well by denser protective oxidation film.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
