Measurement and analysis of density of molten Ni−W alloys

Abstract

The density of molten Ni-W alloys was measured with a modified pycnometric method. It is found that the density of the molten Ni-W alloys decreases with temperature rising, but increases with the increase of tungsten concentration in the alloys. The molar volume of molten Ni-W binary alloys increases with the increase of temperature and tungsten concentration. The partial molar volume of tungsten in liquid Ni-W binary alloy has been calculated approximately as (−1.59+5.64×10⁻³T)×10⁻⁶m³·mol⁻¹.

Keywords

Ni-W alloy / density / modified pycnometric method / molar volume / tungsten

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