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The 18kt gold-based bulk glass-forming composition Au49Ag5.5Pd2.3Cu26.9Si16.3 is modified in order to reduce its fast surface tarnishing caused by internal oxidation of Si, partitioning and fast out-diffusion of Cu and Au. By partially substituting Cu by the species Ga or Sn, the formation of Si as primary crystalline phase is facilitated and a distinct increase of the liquidus temperature is observed...
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