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RESEARCH PRODUCT
Methods for Enhancing the Thermal Durability of High-Temperature Thermoelectric Materials
Marianne EngvollHugh MiddletonNils R. KristiansenGunstein Skomedalsubject
Materials scienceoxidationMetallurgycoatingengineering.materialCondensed Matter PhysicsThermoelectric materialsMagnesium silicide7. Clean energyDurabilityVDP::Teknologi: 500::Elektrotekniske fag: 540Electronic Optical and Magnetic MaterialsWaste heat recovery unitSkutteruditechemistry.chemical_compoundCoatingchemistryThermalMaterials ChemistryengineeringdurabilitySublimation (phase transition)SkutteruditeElectrical and Electronic Engineeringmagnesium silicidedescription
Author's version of an article in the journal: Journal of Electronic Materials. Also available from the publisher at: http://dx.doi.org/10.1007/s11664-013-2917-0 Thermoelectric materials, for example skutterudites and magnesium silicides, are being investigated as promising materials for medium-to-high-temperature waste heat recovery in transport and in industry. A crucial aspect of the success of a thermoelectric material is its stability over time when exposed to rapid heating and cooling. In this work different aspects of the degradation of these thermoelectric materials at high temperature were examined. Initial thermal durability was studied, and several candidate coatings were evaluated to enhance durability by protecting the materials from oxidation and sublimation during thermal cycles in air for up to 500 h and up to 873 K. The samples were characterized by SEM and EDS. The results showed it is possible to reduce degradation of the thermoelectric material without compromising overall thermoelectric efficiency.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-12-07 | Journal of Electronic Materials |