A revision of the Sm-rich region of the Sm–Co system

摘要

The Sm-rich side of the Sm–Co system has been experimentally reinvestigated using the differential scanning calorimetry (DSC) method with slow rates of 1 ℃/min and 0.5 ℃/min as well as microscope and X-ray diffraction (XRD) analyses. Combining the experimental results from DSC, XRD and EPMA (Electron Probe MicroAnalysis) analyses, five invariant reactions have been determined and the existence of the Sm_3Co and Sm_5Co_2 phases confirmed. The phase diagram of Sm–Co system has been accordingly modified.