Impact of 1% gold’s and copper’s addition on mechanical and corrosion properties of resorbable Mg-based metallic glasses

Ryszard T. Nowosielski, K. Cesarz-Andraczke*

The Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18b Street, Gliwice, 44-100, Poland

Adv. Mater. Lett., 2017, 8 (5), pp 614-619

DOI: 10.5185/amlett.2017.7062

Publication Date (Web): Apr 04, 2017

E-mail: katarzyna.cesarz@polsl.pl

Abstract


In the paper the investigations’ results of the Mg69Zn25Ca5Cu1 and Mg69Zn25Ca5Au1 metallic glasses in the range corrosion mechanical, thermal and structural properties were presented. The results were obtained from compression tests, immersion and potentiodynamic corrosion tests, DTA, XRD. The bulk metallic glasses’ samples for investigations, in the form of rods, were produced by pressure casting. By the way of samples’ manufacturing the GFA (glass forming ability) of the alloys was determined. The gold’s and copper’s additions influence, first of all, for corrosion’s properties, decreasing of corrosion’s rate and increasing compression strength, in comparison with properties of resorbable Mg-Zn-Ca metallic glasses. After two hours of immersion the corrosion’s rate of the Mg69Zn25Ca5Cu1 and Mg69Zn25Ca5Au1 metallic glasses on the level 1,68 mm/year and 0,93 mm/year respectively, were determined. On account of lower corrosion’s rate and neutral impact for human body of the gold, the alloy with gold’s addition may be used as a resorbable material for medical implants.

Keywords

Resorbable Mg-based alloys, released hydrogen, amorphous structure, mechanical properties.

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