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2023•InterConfOpen access

Investigation of the Er2Se3-Bi2Se3 system

S. Sultanova, Zivar Hasanova, Z. Ismailov

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Abstract

Methods of physicochemical analysis, namely differential thermal analysis (DTA), high temperature differential thermal analysis (HTTA), X-ray phase analysis (XRD), microstructural analysis (MSA) and microhardness measurements are used to determine the nature of the physicochemical interaction in the Er2Se3-Bi2Se3 ternary system. In the system based on Bi2Se3, solid solutions are formed, the boundaries of which are up to 3 mol% Er2Se3 at room temperature, and at the eutectic temperature it reaches about 8 mol% Er2Se3. The ternary combination of ErBiSe3 with an α-solid solution forms a eutectic, the coordinates of which are 20 mol % Er2Se3 and 810 K.

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Methods of physicochemical analysis, namely differential thermal analysis (DTA), high temperature differential thermal analysis (HTTA), X-ray phase analysis (XRD), microstructural analysis (MSA) and microhardness measurements are used to determine the nature of the physicochemical interaction in the Er2Se3-Bi2Se3 ternary system. In the system based on Bi2Se3, solid solutions are formed, the boundaries of which are up to 3 mol% Er2Se3 at room temperature, and at the eutectic temperature it reaches about 8 mol% Er2Se3. The ternary combination of ErBiSe3 with an α-solid solution forms a eutectic, the coordinates of which are 20 mol % Er2Se3 and 810 K.

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Available abstract

Methods of physicochemical analysis, namely differential thermal analysis (DTA), high temperature differential thermal analysis (HTTA), X-ray phase analysis (XRD), microstructural analysis (MSA) and microhardness measurements are used to determine the nature of the physicochemical interaction in the Er2Se3-Bi2Se3 ternary system. In the system based on Bi2Se3, solid solutions are formed, the boundaries of which are up to 3 mol% Er2Se3 at room temperature, and at the eutectic temperature it reaches about 8 mol% Er2Se3. The ternary combination of ErBiSe3 with an α-solid solution forms a eutectic, the coordinates of which are 20 mol % Er2Se3 and 810 K.

Key concepts: Eutectic system, Differential thermal analysis, Ternary numeral system, Thermal analysis, Ternary operation, Materials science, Indentation hardness, Solid solution

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