Devitrification and hydrogen storage capacity of the eutectic Ca72Mg28 metallic glass

Very low density eutectic Ca72Mg28 at.% metallic glass was produced by a rapid solidification melt-spinning process. The glass is considered as being a precursor of more complex ternary Ca-Mg-Zn alloys consisting solely of biocompatible elements with the view to its potential use as bioresorbable alloy for orthopaedic applications. Density, elastic modulus, hydrogen storage capacity, thermal properties of the metallic glass, such as the glass transition, crystallization and melting temperatures, as well as heats of crystallization and melting are reported. The devitrification process of the amorphous alloy up to its melt is fully described. •We present preparation, stability and devitrification process of the eutectic Ca72Mg28 at.% biocompatible amorphous alloy.•Density of the alloy is 1.57 g cm−3 which is the lowest density among all known amorphous metallic alloys.•Hydrogen storage capacity of the amorphous alloy as well as the crystalline counterpart was determined.