Tests results of skutterudite based thermoelectric unicouples

Saber, Hamed H.; El‐Genk, Mohamed S.; Caillat, T.

doi:10.1016/j.enconman.2006.06.008

Cited by 49 publications

(30 citation statements)

References 6 publications

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“…Already several coating alternatives for leg-level protection have been evaluated for the use on SKD ranging from thin metal layers to thicker composite glass coatings [18][19][20][21][22][23][24][25]. The most important properties of a coating, aside from hindering oxidation and sublimation of the TEmaterial, should be low electrical and thermal conductivity, matching thermal expansion with the TE-material, good adhesion to the substrate and to be chemically inert.…”

Section: Introductionmentioning

confidence: 99%

Methods for Enhancing the Thermal Durability of High-Temperature Thermoelectric Materials

Skomedal

Kristiansen

Engvoll

et al. 2013

Journal of Elec Materi

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Thermoelectric materials such as Skutterudites and Magnesium Silicides are being investigated as promising alternatives for medium to high temperature waste heat recovery in the transport sector and industry. A critical success factor for the thermoelectric material is its stability over time when exposed to rapid heating and cooling during its lifetime. In this work the different degradation issues at high temperature are examined for these thermoelectric materials, and several means of enhancing durability have been evaluated. Initial thermal durability studies have been performed with Skutterudites and Magnesium Silicides with candidate coatings for protecting the materials from oxidation and sublimation during thermal cycles in air for up to 500 hours and up to 873K. The samples were then characterized by SEM and EDS. The results showed that it is possible to decrease degradation of the thermoelectric material without compromising the overall thermoelectric efficiency.

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Section: Introductionmentioning

confidence: 99%

Methods for Enhancing the Thermal Durability of High-Temperature Thermoelectric Materials

Skomedal

Kristiansen

Engvoll

et al. 2013

Journal of Elec Materi

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“…A key issue concerning utilization of these intrinsic properties is the experimental and technological accessibility of skutterudite-derived compounds comprising synthesis, processing, machining and testing procedures [15].…”

Section: Introductionmentioning

confidence: 99%

Application of spark plasma sintering to the fabrication of binary and ternary skutterudites

Recknagel

Reinfried

Höhn

et al. 2007

Science and Technology of Advanced Materials

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Spark plasma sintering (SPS) synthesis of CoSb 3 and LaFe 4 Sb 12 from ball-milled elemental metal powders has been performed obtaining samples with high relative densities ($99%). Fracture behaviour, the microstructure and mechanical properties were studied. From ultrasound and nano-indentation measurements, Young's moduli of 148 GPa for CoSb 3 and 141 GPa for LaFe 4 Sb 12 were deduced. SPS has been also applied to compact alkali metal and alkaline-earth metal iron antimonides with filled skutterudite structure. r

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“…The sublimation rate for uncoated La 3-x Te 4 is on the order of 10 -6 g/cm2hr at 1173 K and a sublimation coating, only required for long-term operation at temperatures above 1173 K, is under development. Sublimation suppression has been demonstrated for up to 6,000 hrs at 873 K for SKD coupons encapsulated in aerogel 5,7 .…”

Section: B Sublimation Suppressionmentioning

confidence: 98%