Thermal Evaporation Loss Measurements on Quasicrystal (Ti–Zr–Ni) and Glass Forming (Vit 106 and Vit 106a) Liquids
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Thermal evaporation loss measurements made using the electrostatic levitation (ESL) technique for one binary Ti–Zr, two ternary Ti–Zr–Ni, and two glass-forming (Vit 106 and Vit 106a) alloy liquids are reported. The containerless environment enables measurements not only for the equilibrium liquids but also for the metastable supercooled liquids. The data follow the Langmuir equation when the activity coefficient of the solute atoms, a measure for the deviation from the ideal solution behavior, is taken into account. An estimate for the activity coefficient of Ni in the Ti–Zr liquid is made from these data, demonstrating the effectiveness of ESL for such measurements.
KeywordsAlloy liquids Cohesive energy Evaporation Langmuir equation
This research was partially supported by NASA under Grants NNX07AK27G and NNX10AU19G.
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