HTHP 48.5-6, p. 423-438

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Normal spectral emissivity of liquid Al-Ti binary alloys
Juergen Brillo, Johanna J. Wessing, Hidekazu Kobatake and Hiroyuki Fukuyama

The normal spectral emissivity ε of four compositions in the Al-Ti binary liquid system was measured in dependence of the wavelength and temperature. It was found that all compositions show negligible temperature dependence. At a wavelength of 940 nm, the emissivity amounts to 0.37, 0.40, 0.32, and 0.31 for Ti, Al₂₀Ti₈₀, Al₅₀Ti₅₀, and Al₇₀Ti₃₀, respectively. The dependence of the emissivity on composition is in good agreement with literature data of binary and multi-component Al-Ti-based alloys.

Using the classical Drude model, electrical resistivities are predicted for the Al-Ti system from the measured emissivities. Comparison with existing data from literature for Al show reasonable agreement.

Keywords: Al-Ti liquid binary alloys, electromagnetic levitation, electrical resistivity, normal spectral emissivity, thermophysical properties.

Full Text (IP)
DOI: 10.32908/hthp.v48.783