Peltier effect during spark plasma sintering (SPS) of thermoelectric materials

Maizza, Giovanni; Mastrorillo, Gioacchino Dario; Grasso, Salvatore; Ning, Huanpo; Reece, Michael J.

doi:10.1007/s10853-017-1188-1

Cited by 22 publications

(7 citation statements)

References 13 publications

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“…The calculated temperature difference was compared with the results obtained experimentally on thermoelectric silicides [26]. However, the results in Reference [26] were obtained for the sample with a height of 3 mm, and with a diameter of 20 mm. Higher values of sample dimensions can result in a higher temperature difference.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…There are just a few studies, which take into account thermoelectric effects occurring in the contact area between a sample and the plungers (or a graphite die). For instance, the impact of thermoelectric effects has been experimentally and numerically studied in Reference [26] for the case of MgSi 2 and MnSi 1.4 samples in order to obtain a more realistic picture of the temperature field distribution. In order to trace the sintering temperature difference ΔTs in the samples, two thermocouples were placed onto the sample-plungers interfaces, and a small sector of the die was cut off.…”

Section: Introductionmentioning

confidence: 99%

“…Numerical methods can provide an effective tool for studying the evolution of sample temperature in the course of sintering. A computer simulation based on the finite elements method (FEM) is convenient and the most commonly used method for SPS simulation [25,26,28,29,30,31,32]. Data on current, pressure and/or displacement are taken from the SPS tracking system.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Field Assisted Sintering of Silicon Germanium Alloys

et al. 2019

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We report a numerical study of the field assisted sintering of silicon germanium alloys by a finite element method, which takes into account contact resistances, thermal expansion and the thermoelectric effect. The distribution of electrical and thermal fields was analyzed numerically, based on the experimental data collected from spark plasma sintering (SPS) apparatus. The thermoelectric properties of Si-Ge used within the simulation were considered as the function of density and the sintering temperature. Quantitative estimation of the temperature distribution during the sintering pointed to a significant, up to 60 °C, temperature difference within the specimen volume for the case of the sintering temperature at 1150 °C.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of Field Assisted Sintering of Silicon Germanium Alloys

et al. 2019

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“…[ 20 ]. Pronounced temperature gradients are associated with the processing of thermoelectric materials [ 21 , 22 ]. Very recently, Tarini et al [ 23 ] also reported SPS reducing conditions (including the direct contact between the sample and graphite) results in large internal stresses causing the formation of macroscopic cracks.…”

Section: Introductionmentioning

confidence: 99%

Spark Plasma Sintering of LiFePO4: AC Field Suppressing Lithium Migration

et al. 2021

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Our work proposes a comparison between Spark Plasma Sintering of LiFePO4 carried out using an Alternating Current (AC) and Direct Current (DC). It quantifies the Li-ion migration using DC, and it validates such hypothesis using impedance spectroscopy, X-ray photoelectron spectroscopy and inductively coupled plasma optical emission spectroscopy. The use of an AC field seems effective to inhibit undesired Li-ion migration and achieve high ionic conductivity as high as 4.5 × 10−3 S/cm, which exceeds by one order of magnitude samples processed under a DC field. These results anticipate the possibility of fabricating a high-performance all-solid-state Li-ion battery by preventing undesired Li loss during SPS processing.

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“…Существуют работы по моделированию распределения температуры и давления, расчета эффекта Пельтье при спекании термоэлектриков [7,8]. Изменение пористости, плотности и размеров образца оказывает значительное влияние на тепловые, электрические и механические процессы ИПС.…”

Section: Introductionunclassified

Моделирование процесса усадки термоэлектриков при искровом плазменном спекании на примере Ge-Si

Tukmakova¹,

Samusevich²,

Тхоржевский³

et al. 2019

Физика И Техника Полупроводников

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The densification of Ge-Si within spark plasma sintering has been simulated. The simulation was based on finite elements method and implemented in Comsol Multiphysics. The model of mechanical processes was based on the simulation results published earlier for metal and ceramic powder materials. The model included plastic and elastic deformation description, impact of porosity on electrical, thermal and mechanical properties. The pressure field in the sample has been calculated. The change of sample diameter due to the expansion and compression has been obtained for the soaking period.

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Peltier effect during spark plasma sintering (SPS) of thermoelectric materials

Cited by 22 publications

References 13 publications

Simulation of Field Assisted Sintering of Silicon Germanium Alloys

Simulation of Field Assisted Sintering of Silicon Germanium Alloys

Spark Plasma Sintering of LiFePO4: AC Field Suppressing Lithium Migration

Моделирование процесса усадки термоэлектриков при искровом плазменном спекании на примере Ge-Si

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