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Hofstetter, J; Martinelli, E; Weinberg, AM; Becker, M; Mingler, B; Uggowitzer, PJ; Loffler, JF; .
Assessing the degradation performance of ultrahigh-purity magnesium in vitro and in vivo.
CORROS SCI. 2015; 91: 29-36.
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Autor/innen der Med Uni Graz:
Martinelli Elisabeth
Weinberg Annelie-Martina
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Abstract:
The biodegradation of ultrahigh-purity Mg (XHP Mg, Fe approximate to 2 ppm) was tested in vitro in NaHCO3/CO2-buffered simulated body fluid and in vivo in the femur of rats. The in vitro degradation rate, which was evaluated using an also here described newly designed hydrogen evolution testing setup, is with approximate to 10 +/- 3 mu m/y very low and shows very good agreement with in vivo data. The results for XHP Mg are also compared with in vitro tests on high-purity Mg (Few approximate to 37 ppm) in the as-cast and annealed states. The less pure specimens exhibit significantly higher degradation rates due to the formation of Fe-containing precipitates during casting and annealing. (C) 2014 Elsevier Ltd. All rights reserved.

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