1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Μεταδιδακτορικοί ερευνητές

Τύπος:	Ανακοίνωση σε συνέδριο
Τίτλος:	Synthesis and characterization of magnesium silicide formed by thermochemical diffusion process
Μέλος ερευνητικής ομάδας:	[EL] Τεκνετζή, Αικατερίνη[EN] Teknetzi, Aikaterini [EL] Χρυσάφης, Κωνσταντίνος[EN] Chrysafis, Konstantinos [EL] Καρφαρίδης, Δημήτριος[EN] Karfaridis, Dimitrios [EL] Βουρλιάς, Γεώργιος[EN] Vourlias, Georgios
Επικεφαλής ερευνητικής ομάδας:	[EL] Σταθοκωστόπουλος, Δημήτριος[EN] Stathokostopoulos, Dimitrios
Ημερομηνία:	09/09/2021
Περίληψη:	In last few decades, considerable research effort has been concentrated to develop material which can be used to transform heat into electric power. These materials have been considered as a potential environment-friendly high performance thermoelectric material. Metal silicides are promising thermoelectric materials and characterized by low resistance, high thermoelectric figure of merit ZT, low density, high melting point, thermal stability, low toxicity and fabrication cost. A variety of techniques have been used to prepare silicides, as ball milling, solid state reaction, sputtering, reactive deposition epitaxy. Here, a new environmental friendly, low cost and simple technique, thermochemical diffusion process (pack cementation) was used to synthesize Magnesium silicide (Mg2Si). Magnesium silicide is a prospective narrow gap semiconductor for thermoelectric energy conversion at high temperatures. The current study focuses on the fabrication of new thermoelectric materials, aiming towards the development of compounds with advanced thermoelectric properties. For this process a powder mixture which contains Si powder Mg (donor material), and a halide salt which is the chemical activator are packed and sealed in a ceramic. The sealed crucible is then heated in an electric furnace under Ar atmosphere. A series of experiments were carried out at temperatures ranging from 450oC to 650oC at different durations from 120 min to 240 min to compose Mg2Si, thermoelectric powders. The morphology and the chemical composition were determined by SEM equipped with EDS analyzer, the phase identification was performed using XRD analysis, the chemical state was identified via XPS and the oxidation resistance of silicides was investigated by TGA.
Γλώσσα:	Αγγλικά
Τόπος δημοσίευσης:	Αθήνα, Ελλάδα
Σελίδες:	3
Θεματική κατηγορία:	[EL] Φυσική, γενικά[EN] Physics, general
Λέξεις-κλειδιά:	thermoelectric efficiency
Κάτοχος πνευματικών δικαιωμάτων:	© by the authors.
Διατίθεται ανοιχτά στην τοποθεσία:	https://www.rawmat2021.gr/congress/wp-content/uploads/2021/10/Book-of-Abstracts-RawMat2021.pdf
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	www.rawmat2021.gr
Τίτλος πηγής δημοσίευσης:	Book of Abstracts International Conference on Raw Materials and Circular Economy “RawMat2021”
Σελίδες τεκμηρίου (στην πηγή):	271
Όνομα εκδήλωσης:	RawMat2021 - International Conference on Raw Materials and Circular Economy
Ημ/νία έναρξης εκδήλωσης:	05/09/2021
Ημ/νία λήξης εκδήλωσης:	09/09/2021
Σημειώσεις:	This research is co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Programme «Human Resources Development, Education and Lifelong Learning» in the context of the project “Reinforcement of Researchers - 2nd Cycle” (MIS-5033021), implemented by the State Scholarships Foundation (ΙΚΥ).
Εμφανίζεται στις συλλογές:	Μεταδιδακτορικοί ερευνητές