In vitro dynamic degradation behavior of new magnesium alloy for orthopedic applications
- In vitro dynamic degradation behavior of new magnesium alloy for orthopedic applications
- 양귀복; 김유찬; 한형섭; 이광철; 석현광; 이재철
- magnesium; zinc; SEM; mechanical properties; biodegradation
- Issue Date
- Journal of biomedical materials research. Part B, Applied biomaterials
- VOL 103, NO 4, 807-815
- We report on methodologies for use in the design of a biodegradable Mg alloy appropriate for load-bearing but temporary orthopedic implant applications. Comparative studies of Mg-5Ca and Mg-5Ca-1Zn were conducted to explore the effects of a combination of minor alloying and hot extrusion, on the alloy's mechanical properties and corrosion resistance. The extruded Mg-5Ca-1Zn exhibited high ultimate compressive strength of 385 MPa and suffered no significant structural degradation even after immersion in simulated body fluid for 30 days. Mg-5Ca-1Zn alloy showed the mechanical strength and controlled corrosion rate to be considered as an ideal candidate for biodegradable orthopedic implant material.
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