Measurement of Melting Point, Radiance Temperature (at Melting Point), and Electrical Resistivity (Above 2,100 K) of Zirconium by a Pulse Heating Method.

摘要

A subsecond duration pulse heating method is used to measure the melting point, radiance temperature (at 650 nm) at the melting point, and electrical resistivity (above 2,100 K) of zirconium. The results yield a value of 2,128 K for the melting point on the International Practical Temperature Scale of 1968. The radiance temperature (at 650 nm) of zirconium at its melting point is 1,940 K, and the corresponding normal spectral emittance is 0.367. At 2,100 K electrical resistivity is 128.7 x 10 to the -8th power ohmmeters.. Estimated inaccuracy is: 8 K in the melting point and in the radiance temperature and 3% in the normal spectral emittance and in the electrical resistivity. (Author)