Measurement of Activity of Cu in Fe-Cu Alloy by Double Knudsen Cell Mass Spectrometry

摘要

Double Knudsen cell mass spectrometry has been used to measure the vapor pressure of Cu in Fe-Cu solid solution in the γFe region and/or a liquid phase in the temperature range from 1200 to 1650 K. The activities of Cu obtained in this study were consistent with those determined by other methods. Thus, the effectiveness of the double Knudsen cell mass spectrometry was confirmed for a solid state solution.