Mitigating the detrimental effects of galvanic corrosion by nanoscale composite architecture design

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)


  • Oliver Renk
  • Martina Cihova
  • Eva-Maria Steyskal
  • Nicole Sommer
  • P. Schmutz
  • Reinhard Pippan
  • Annelie M. Weinberg

Externe Organisationseinheiten

  • Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
  • Technische Universität Graz
  • Empa -Swiss Federal Laboratories for Materials Science and Technology, Thun
  • Medizinische Universität Graz
  • SNSF Postdoctoral Fellow
  • ETH Zürich


Widespread application of magnesium (Mg) has been prevented by its low strength and poor corrosion resistance. Core of this limitation is Mg’s low electrochemical potential and low solubility for most elements, favoring secondary phase precipitation acting as effective micro-galvanic elements. Mg-based metal–metal composites, while benefiting strength, are similarly active galvanic couples. We show that related detrimental corrosion susceptibility is overcome by nanoscale composite architecture design. Nanoscale phase spacings enable high-strength Mg–Fe composites with degradation rates as low as ultra-high purity Mg. Our concept thus fundamentally changes today’s understanding of Mg’s corrosion and significantly widens the property space of Mg-based materials.


Fachzeitschriftnpj Materials degradation
StatusVeröffentlicht - 16 Juni 2022