In vitro corrosion of ZEK100 plates in Hank's Balanced Salt Solution

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Waizy, H.; Weizbauer, A.; Modrejewski, C.; Witte, F.; Windhagen, H. et al.: In vitro corrosion of ZEK100 plates in Hank's Balanced Salt Solution. In: BioMedical Engineering Online 11 (2012), 12. DOI:

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Background: In recent years magnesium alloys have been intensively investigated as potential resorbable materials with appropriate mechanical and corrosion properties. Particularly in orthopedic research magnesium is interesting because of its mechanical properties close to those of natural bone, the prevention of both stress shielding and removal of the implant after surgery.Methods: ZEK100 plates were examined in this in vitro study with Hank's Balanced Salt Solution under physiological conditions with a constant laminar flow rate. After 14, 28 and 42 days of immersion the ZEK100 plates were mechanically tested via four point bending test. The surfaces of the immersed specimens were characterized by SEM, EDX and XRD.Results: The four point bending test displayed an increased bending strength after 6 weeks immersion compared to the 2 week group and 4 week group. The characterization of the surface revealed the presence of high amounts of O, P and Ca on the surface and small Mg content. This indicates the precipitation of calcium phosphates with low solubility on the surface of the ZEK100 plates.Conclusions: The results of the present in vitro study indicate that ZEK100 is a potential candidate for degradable orthopedic implants. Further investigations are needed to examine the degradation behavior.
License of this version: CC BY 2.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2012
Appears in Collections:Fakultät für Maschinenbau

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1 image of flag of Germany Germany 115 94.26%
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5 image of flag of Poland Poland 1 0.82%
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