Open AccessThe partial isothermal section of the Mg-Er-Si Ternary System at 500°C
Author(s) -
Chen Ma,
Dingfei Zhang,
Fusheng Pan,
Zhiwen Lu,
Yi Zhao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1676/1/012096
Subject(s) - isothermal process , solid solution , alloy , scanning electron microscope , phase (matter) , ternary operation , materials science , analytical chemistry (journal) , phase diagram , energy dispersive x ray spectroscopy , ternary compound , chemistry , crystallography , thermodynamics , metallurgy , inorganic chemistry , physics , organic chemistry , chromatography , computer science , composite material , programming language
The partial isothermal section of the Mg-Er-Si ternary system in the Mg-Corner at 500°C has been studied through the equilibrated alloy method by using X-ray diffraction analyses and scanning electron microscopy assisted with energy dispersive spectroscopy of X-ray (SEM-EDS). There is convincing evidence for three compounds which have been clarified to be existing in equilibrium with the a-Mg solid solution at 500°C, i.e. Mg 2 Si, Er 2 MgSi 2 and Er 5 Mg 24 . The results show that the partial isothermal section in the Mg-Corner consists of four single phase regions, five two-phase regions: α-Mg+Er 5 Mg 24 , α-Mg+Mg 2 Si, Mg 2 Si+Er 2 MgSi 2 , α-Mg+Er 2 MgSi 2 and Er 5 Mg 24 +Er 2 MgSi 2 and two three-phase regions: α-Mg+Er 5 Mg 24 +Er 2 MgSi 2 and α-Mg+Mg 2 Si+Er 2 MgSi 2 . The homogeneity ranges of Mg solid solution as well as the solid solubilities of the intermediate phases at 500°C are reported. The phase of Er 5 Mg 24 (cI58-Mn-type), Mg 2 Si (cF12-CaF 2 -type) and Er 2 MgSi 2 have been mainly studied.