Abstract
The current work reports on the investigation of mechanisms involved during spark plasma assisted in-situ nano-crystalline magnesium silicide (Mg2Si) phase evolution and the simultaneous densification with the substantial increase of nano-structured silicon-germanium alloy (SiGe) inclusion. The anisothermal sintering was carried out up to 650°C with an applied pressure of 50MPa in the vacuum atmosphere (~10Pa). X-ray diffraction and electron microscopy studies conceded the formation of Mg2Si matrix phase and presence of SiGe inclusion. The synthesized thermo-electric composite demonstrated the superior density (>95%). The synthesized TE composites shows the benchmark hardness values >0.97GPa.
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