Vaporization of LaCrO<sub>3</sub>
: Partial and Integral Thermodynamic Properties
作者:Dong-Huyn Peck、Miroslaw Miller、Dietmar Kobertz、Hubertus Nickel、Klaus Hilpert
DOI:10.1111/j.1151-2916.1996.tb08104.x
日期:1996.12
The vaporization of LaCrOsub 3}(s) and samples of the composition LaCrOsub 3} + Lasub 2}Osub 3} was investigated in the temperature range of 1,887--2,333 K by Knudsen effusion mass spectrometry using Knudsen cells made of tungsten lined completely with iridium. The species Cr(g), CrO(g), CrOsub 2}(g), and LaO(g) were identified in the vapor. Their partial pressures were determined by calibration
在 1,887--2,333 K 的温度范围内,使用 Knudsen 渗出质谱法研究了 LaCrOsub 3}(s) 和成分 LaCrOsub 3} + Lasub 2}Osub 3} 的样品的汽化由钨制成的 Knudsen 电池完全衬有铱。在蒸气中鉴定了 Cr(g)、CrO(g)、CrOsub 2}(g) 和 LaO(g) 种类。它们的分压是通过用纯铂固体校准来确定的。Crsub 2}Osub 3},asub Crsub 2}Osub 3}},在LaCrOsub 3}中对于Crsub 2}Osub 3}-poor的热力学活性对于测量的温度范围,该相的相边界为 ln asub Crsub 2}Osub 3}} = minus}(17953/T) minus} 0.485(以 K 给出的温度 T) +-}13% 的可能总体误差。Delta}Gsub f