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Nanoporous silver, with an average grain size of 20–40nm and with asymmetric pores typically of ∼25 and 100nm width and length, respectively, was synthesized by dealloying of amorphous Ag-based alloys. Binary and ternary Ag-based alloys were selected to prepare fine duplex or amorphous structures and to then remove the non-Ag phase or elements by a proper selective leaching process. The nanoporous...
Zr–Al–Ni–Cu bulk metallic glasses (BMGs) with the content of Zr up to 72at.% were prepared by copper mold casting. The compressive strain and fracture strength for Zr 72 Ni 7.5 Cu 13 Al 7.5 BMG reach 9.5% and 1730MPa, respectively. The large plasticity of the BMGs is considered to originate in the large amount of free volume induced by the increase in Zr, which results...
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