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Creators/Authors contains: "Helmer, Alexander T"

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  1. ; ; ; (, Materials Letters)
    Free, publicly-accessible full text available November 1, 2026
  2. ; (, Emergent Materials)
    Abstract Mg4(TiZnSn)3, a rare-earth-free Mg-based multi-principal element alloy, was synthesized via high-energy ball milling and cold compaction. Potentiodynamic polarization in 0.1 M NaCl revealed spontaneous passivation with a corrosion current density of 8.96 ± 0.83 µA/cm2and a nobler than Mg corrosion potential of -1058.35 ± 15.91 mVSCE. X-ray photoelectron spectroscopy confirmed the formation of a mixed oxide film containing ZnO, SnO2, and TiO2, contributing to the observed passivity. The alloy also exhibited improved mechanical performance, with a hardness of 5.06 ± 0.41 GPa and Young’s modulus of 109.24 ± 10 GPa. These results demonstrate that tailored multi-element alloying and powder metallurgy can synergistically enhance both corrosion resistance and mechanical properties in Mg alloys. 
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    Free, publicly-accessible full text available August 13, 2026