Pressure Dependence of the emf of Thermocouples to 1300°C and 50 kbar
Pressure Dependence of the emf of Thermocouples to 1300°C and 50 kbar
复制标题
热电偶电动势在 1300°C 和 50 kbar 下的压力依赖性
DOI：
10.1063/1.1714023
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发表时间：
1965
影响因子：
3.2
通讯作者：
H. M. Strong
中科院分区：
文献类型：
--
作者：
R. E. Hanneman;H. M. Strong
压力对常用热电偶电动势的相对和绝对影响在1300°C和50 kbar下测量。由于压力的影响，Pt/Pt 10 Rh，Pt/Pt 13 Rh，铬镍和铁康铜热电偶的相对温度修正作为温度和压力的函数。这些相对温度校正的精度约为±1°C，在某些情况下，其幅度可超过40°C。这些热电偶的绝对校正值大致由下式确定：（1）将金刚石-石墨平衡的边界条件的实验和理论结果相关联，（2）将压力对其他单组分相变的影响的实验和计算结果相关联，以及（3）对高温高压下扩散的理论和实验结果进行了评价，并对所有热电偶的绝对温度进行了修正在给定的温度下，压力与温度成正比...
The relative and absolute effects of pressure on the emf of commonly used thermocouples were measured to 1300°C and 50 kbar. The relative temperature corrections due to the effect of pressure are presented for Pt/Pt10Rh, Pt/Pt13Rh, Chromel‐Alumel, and iron‐constantan thermocouples as a function of temperature and pressure. The accuracy of these relative temperature corrections is approximately ±1°C and their magnitudes can exceed 40°C in some cases. The absolute corrections of these thermocouples are approximately determined by: (1) correlating experimental and theoretical results on the boundary conditions for the diamond ⇄ graphite equilibrium, (2) relating experimental and calculated results for the effects of pressure on other single‐component phase transformations, and (3) evaluating theoretical and experimental results for diffusion at high pressures and high temperatures.The absolute temperature corrections for all of the thermocouples investigated are proportional to the pressure at a given temper...