Cezairliyan Ared, McClure J L
Institute for Materials Research, National Bureau of Standards, Washington, DC 20234.
J Res Natl Bur Stand A Phys Chem. 1974 Jan-Feb;78A(1):1-4. doi: 10.6028/jres.078A.001.
Simultaneous measurements of heat capacity, electrical resistivity and hemispherical total emittance of iron (99.9% pure) in the temperature range 1500 to 1800 K, and the melting point of iron by a subsecond duration, transient technique are described. The measurements indicate increases in heat capacity and electrical resistivity as the result of the solid-solid phase transformation ( → ) in iron. The measured value of the hemispherical total emittance at 1720 K is 0.33. The average of the results of two experiments yield a value of 1808 K for the melting point of iron. Estimated inaccuracies of measured properties are: 3 percent for heat capacity and emittance, 1 percent for electrical resistivity, and 5 K for the melting point.
描述了在1500至1800K温度范围内对纯度为99.9%的铁的热容量、电阻率和半球总发射率进行的同时测量，以及通过亚秒级持续时间的瞬态技术对铁熔点的测量。测量结果表明，由于铁中发生的固-固相变（→），热容量和电阻率增加。在1720K时测得的半球总发射率值为0.33。两次实验结果的平均值得出铁熔点为1808K。测量特性的估计误差为：热容量和发射率为3%，电阻率为1%，熔点为5K。
