Thermoelectric and Mechanical Properties of Environmentally Friendly Mg2Si0.3Sn0.67Bi0.03/SiC Composites
| Autor: | Yixuan Shi, Jan Kycia, Tianze Zou, Leilane R. Macario, Parisa Jafarzadeh, Holger Kleinke |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Toughness Materials science Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology Magnesium silicide Thermoelectric materials 01 natural sciences chemistry.chemical_compound chemistry 0103 physical sciences Thermoelectric effect Silicon carbide Figure of merit General Materials Science Crystallite Composite material 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 11:45629-45635 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | In this work, polycrystalline n-type Mg2Si0.30Sn0.67Bi0.03 dispersed with x wt % β-SiC nanoparticles (x = 0, 0.5, 1.0, 1.5, and 3.0) thermoelectric materials were fabricated by a solid-state reaction in a low-cost container, consolidated by hot-pressing. We obtained figure of merit values zT above 1.4 at 773 K along with enhanced mechanical properties by adding β-SiC into an Mg2Si0.30Sn0.67Bi0.03 matrix. Incorporation of SiC nanoparticles has thusly simultaneously increased toughness and, depending on the SiC content, thermoelectric performance. The peak figure of merit was improved from zT = 1.33 for Mg2Si0.30Sn0.67Bi0.03 to 1.45 for Mg2Si0.30Sn0.67Bi0.03 with 3 wt % at 773 K. |
| Databáze: | OpenAIRE |
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