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

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...

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Bibliographic Details
Published in:Biomedical engineering online 2012-03, Vol.11 (1), p.12-12
Main Authors: Waizy, Hazibullah, Weizbauer, Andreas, Modrejewski, Christian, Witte, Frank, Windhagen, Henning, Lucas, Arne, Kieke, Marc, Denkena, Berend, Behrens, Peter, Meyer-Lindenberg, Andrea, Bach, Friedrich-Wilhelm, Thorey, Fritz
Format: Article
Language:English
Subjects:
Alloys
Alloys - chemistry
Bicarbonates - chemistry
Biocompatible Materials - chemistry
Bone surgery
Colleges & universities
Corrosion
Corrosion and anti-corrosives
Hydrodynamics
Immersion
in vitro study
Investigations
Isotonic Solutions - chemistry
Magnesium
Magnesium - chemistry
Magnesium alloy
Magnesium alloys
Materials science
Mechanical Phenomena
Mechanical properties
Plates
Solid solutions
Surface Properties
Surgery
Tomography
Transplants & implants
Veterinary medicine
Zirconium
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Summary: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. 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. 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. 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.
ISSN:1475-925X
1475-925X
DOI:10.1186/1475-925X-11-12