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

Abstract

Simultaneous measurements of heat capacity, electrical resistivity and hemispherical total emittance of zirconium 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 = 36.65 - 1.435 × 10 - 2 T + 6.624 × 10 - 6 T 2 ρ = 87.95 + 1.946 × 10 - 2 T ϵ = 0.2031 + 6.362 × 10 - 5 T where C p is in J · mol-1 · K-1, ρ is in 10-8 Ω · m, and T is in K. Estimated inaccuracies of the measured properties are: 3 percent for heat capacity, 2 percent for electrical resistivity and 5 percent for hemispherical total emittance.