Abstract
Since bioresorbable metal alloys like magnesium and iron are highly interesting in biomedical applications , significant efforts have been made to decrease the degradation rate of magnesium alloys, as well as to increase the degradation rate of iron-based alloys . Since silver is known to act as an effective cathode for iron, in addition to its antibacterial behaviour, it is gaining more interest as an alloying element for iron. Unfortunately, silver itself corrodes extremely slowly, and the effect of silver in the nanoscale on the human organism is, up to now, still controversial. Therefore, new silver alloys based on rare earth elements, as well as on typical elements for biomedical applications (Ca, Mg, Zn) with an adapted degradation profile (rate, scale of corrosion products), are a focal point of this work. Due to the immiscibility of iron and silver, it is not possible to cast iron–silver X-alloys, but it is feasible to manufacture these alloys using powder-based additive technologies.
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Acknowledgements
The authors thank Mathias von Spalden, Maik Robert Peters, and Thomas Janzen for their support during the investigations.
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© 2019 The Minerals, Metals & Materials Society
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Hoyer, KP., Schaper, M. (2019). Alloy Design for Biomedical Applications in Additive Manufacturing. In: TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05861-6_44
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DOI: https://doi.org/10.1007/978-3-030-05861-6_44
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