Simultaneous Measurements of Heat Capacity, Electrical Resistivity, and Hemispherical Total Emittance by a Pulse Heating Technique: Vanadium, 1500 to 2100 K

利用脉冲加热技术同时测量钒的热容、电阻率和半球总发射率:1500 至 2100 K

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Abstract

Simultaneous measurements of heat capacity, electrical resistivity, and hemispherical total emittance of vanadium in the temperature range 1500 to 2100 K by a subsecond duration, pulse heating technique are described. The results are expressed by the relations: c (p) = 56.34 - 3.839 × 10(-2) T + 1.563 × 10(-5) T (2) ρ = 8.794 + 6.282 × 10(-2) T - 6.804 × 10(-6) T (2) where c (p) is in J · mol(-1) · K(-1), ρ is in 10(-8) Ω · m, and T is in K. The values for the hemispherical total emittance are: 0.313 at 1900 K and 0.332 at 2000 K. Estimated inaccuracies of the measured properties are: 3 percent for heat capacity, 0.5 percent for electrical resistivity and 5 percent for hemispherical total emittance.

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