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Thermoelectric properties of MgTi2O5/TiN conductive composites prepared via reactive spark plasma sintering for high temperature functional applications
- Source :
- Scripta Materialia. 178:44-50
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- In this study, thermoelectric properties of MgTi2O5-based composites were investigated. 10–30 vol.% TiN were added as a conductive reinforcement phase. MgTi2O5/TiN composites were successfully synthesized at 1373 K for 10 min via reactive spark plasma sintering. The present SPS process itself enhanced electrical conductivity of MgTi2O5 more than 250 times while effectively suppressing thermal conduction by defect engineering. Moreover, compositing further remarkably improved its electrical conductivity, and hence large enhancements in the thermoelectric power factor and ZT value were achieved. The results indicate a new doping technique in MgTi2O5 and enhancing thermoelectric properties of other insulating oxide materials.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Doping
Metals and Alloys
Oxide
chemistry.chemical_element
Spark plasma sintering
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
Thermal conduction
01 natural sciences
chemistry.chemical_compound
chemistry
Mechanics of Materials
Electrical resistivity and conductivity
0103 physical sciences
Thermoelectric effect
General Materials Science
Composite material
0210 nano-technology
Tin
Electrical conductor
Subjects
Details
- ISSN :
- 13596462
- Volume :
- 178
- Database :
- OpenAIRE
- Journal :
- Scripta Materialia
- Accession number :
- edsair.doi...........cf97d6bf40ad206f1d27035a114de6a2