Details
| Original language | English |
|---|---|
| Pages (from-to) | 189-195 |
| Number of pages | 7 |
| Journal | Procedia CIRP |
| Volume | 5 |
| Publication status | Published - 2 Mar 2013 |
| Event | 1st CIRP Conference on BioManufacturing, BioM 2013 - Tokyo, Japan Duration: 3 Mar 2013 → 5 Mar 2013 |
Abstract
In this paper the performance of a magnesium based implant system is analyzed. A special emphasis is placed on the impact of stress on the corrosion behavior of the magnesium alloy. An implant system containing a plate and 4 corresponding screws is machined from Mg LAE442. Its corrosion behavior is tested in-vivo in New Zealand White Rabbits for 6 and 12 weeks of implantation. The plate is monocortically fixated on the medial tibia. At the interface between screw and plate increased corrosion is observed. This phenomenon is stronger on the caudal side of the screw. Parallel to the in-vivo test the influence of stress load on the corrosion rate is analyzed for LAE442 in in-vitro tests. Compressive load is applied on cylindrical specimens in axial direction and the corrosion rate is measured in 0.9 wt% NaCl solution by eudiometry and mass loss. Additionally rectangular samples are bent to apply tensile stress on the surface. A drop of 5 wt% NaCl is deposited on the surface and the corrosion is evaluated by microscopic images. It is shown that stress essentially influences the corrosion rate. While tensile stress decreases the corrosion, compressive stress leads to higher corrosion rates.
Keywords
- Bioresorbable osteosynthesis magnesium LAE442 corrosion
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Procedia CIRP, Vol. 5, 02.03.2013, p. 189-195.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Influence of stress on the degradation behavior of Mg LAE442 implant systems
AU - Denkena, B.
AU - Köhler, J.
AU - Stieghorst, J.
AU - Turger, A.
AU - Seitz, J.
AU - Fau, D. R.
AU - Wolters, L.
AU - Angrisani, N.
AU - Reifenrath, J.
AU - Helmecke, P.
N1 - Funding information: We are grateful for the support of the German Research Foundation who promoted the research for this paper within the collaborated research project 599
PY - 2013/3/2
Y1 - 2013/3/2
N2 - In this paper the performance of a magnesium based implant system is analyzed. A special emphasis is placed on the impact of stress on the corrosion behavior of the magnesium alloy. An implant system containing a plate and 4 corresponding screws is machined from Mg LAE442. Its corrosion behavior is tested in-vivo in New Zealand White Rabbits for 6 and 12 weeks of implantation. The plate is monocortically fixated on the medial tibia. At the interface between screw and plate increased corrosion is observed. This phenomenon is stronger on the caudal side of the screw. Parallel to the in-vivo test the influence of stress load on the corrosion rate is analyzed for LAE442 in in-vitro tests. Compressive load is applied on cylindrical specimens in axial direction and the corrosion rate is measured in 0.9 wt% NaCl solution by eudiometry and mass loss. Additionally rectangular samples are bent to apply tensile stress on the surface. A drop of 5 wt% NaCl is deposited on the surface and the corrosion is evaluated by microscopic images. It is shown that stress essentially influences the corrosion rate. While tensile stress decreases the corrosion, compressive stress leads to higher corrosion rates.
AB - In this paper the performance of a magnesium based implant system is analyzed. A special emphasis is placed on the impact of stress on the corrosion behavior of the magnesium alloy. An implant system containing a plate and 4 corresponding screws is machined from Mg LAE442. Its corrosion behavior is tested in-vivo in New Zealand White Rabbits for 6 and 12 weeks of implantation. The plate is monocortically fixated on the medial tibia. At the interface between screw and plate increased corrosion is observed. This phenomenon is stronger on the caudal side of the screw. Parallel to the in-vivo test the influence of stress load on the corrosion rate is analyzed for LAE442 in in-vitro tests. Compressive load is applied on cylindrical specimens in axial direction and the corrosion rate is measured in 0.9 wt% NaCl solution by eudiometry and mass loss. Additionally rectangular samples are bent to apply tensile stress on the surface. A drop of 5 wt% NaCl is deposited on the surface and the corrosion is evaluated by microscopic images. It is shown that stress essentially influences the corrosion rate. While tensile stress decreases the corrosion, compressive stress leads to higher corrosion rates.
KW - Bioresorbable osteosynthesis magnesium LAE442 corrosion
UR - http://www.scopus.com/inward/record.url?scp=84883868192&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2013.01.038
DO - 10.1016/j.procir.2013.01.038
M3 - Conference article
AN - SCOPUS:84883868192
VL - 5
SP - 189
EP - 195
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 1st CIRP Conference on BioManufacturing, BioM 2013
Y2 - 3 March 2013 through 5 March 2013
ER -