Non-Contact Thermophysical Property Measurements of Liquid and Undercooled Alumina

  title={Non-Contact Thermophysical Property Measurements of Liquid and Undercooled Alumina},
  author={P. Paradis and Takehiko Ishikawa and Yutaka Saita and Shin-ichi Yoda},
  journal={Japanese Journal of Applied Physics},
The density and the isobaric heat capacity of alumina in its liquid and undercooled states were measured using an electrostatic levitation furnace. Over the 2175 to 2435 K temperature interval, the density can be expressed as ρ(T)=2.93×103-0.12(T-Tm) (kg·m-3) with Tm=2327 K, yielding a volume expansion coefficient α(T)=4.1×10-5 (K-1). In addition, the isobaric heat capacity can be estimated as CP(T)=153.5+3.1×10-3(T-Tm) (J·mol-1·K-1) if the hemispherical total emissivity of the liquid remains… 

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