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Spark plasma sintering - Wikipedia

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Spark plasma sintering synthesis of Ni1−xZnxFe2O4 …

Thermoelectric properties of combustion synthesized and spark plasma sintered rare-earth-doped (Y, La, Sm, Gd and Dy) SrTiO3 was investigated from room temperature to 870 K toward the viewpoint of energy and time saving without deterioration in thermoelectric properties. All the rare-earth-doped SrTiO3 were successfully synthesized and sintered with high purities and high densities. With temperature increasing, the absolute value of Seebeck coefficient increased and the electric conductivity decreased; the power factor of all the samples decreased except Y-doped sample in the experimental temperature range. In all the samples, the La-doped SrTiO3 and the Y-doped SrTiO3 had the highest and the lowest power factor, respectively. The dimensionless figure of merit of La-doped samples with different doping amount was evaluated and the maximum was 0.22, which was obtained at 800 K from Sr0.92La0.08TiO3 sample. Comparing Y and La-doped samples prepared by our method with that of conventional solid-state reaction method, the thermoelectric properties of our samples were relatively higher. Thus the combination of combustion synthesis and spark plasma sintering has a potential to prepare perovskite-oxide materials with relatively higher thermoelectric properties for high-temperature application.

Now that we’ve described DNA and RNA, it’s time to take a look at the process of protein synthesis

Spark Plasma Sintering (SPS) is a novel powder consolidation process that utilises pulse current to achieve rapid densification at a relatively lower temperature than traditional sintering techniques.

Spark Plasma Sintering (this page as a pdf file)

Spark Plasma Sintering | Total Materia Blog

Tetrahedrite offers advantages over state-of-the-art thermoelectrics, such as lead telluride, because of its low cost and environmentally friendly composition. However, typical sealed-tube synthesis of tetrahedrite can require multiple days or weeks. In this study, tetrahedrite co-doped with nickel and zinc was synthesized by two different approaches which both require significantly less time than the conventional furnace-ampoule technique. The first technique utilizes a short ball milling step followed by reactive spark plasma sintering to form tetrahedrite, and the entire process requires less than 2 h of total synthesis time. The second method involves mechanical alloying to obtain single-phase tetrahedrite, combined with spark plasma sintering (SPS) for densification. Thermoelectric properties were measured and compared for samples of composition Cu10Ni2-xZnxSb4S13 (x = 0, 0.5, 1, 1.5) made by both techniques. Peak ZT values were obtained for Cu10Ni2Sb4S13 with ZT = 0.66 at 673 K for SPS reacted and mechanically alloyed samples. Transport properties are comparable between the two techniques, and this provides evidence that supports reactive spark plasma sintering as a viable synthetic technique for tetrahedrite thermoelectric materials.

N2 - Tetrahedrite offers advantages over state-of-the-art thermoelectrics, such as lead telluride, because of its low cost and environmentally friendly composition. However, typical sealed-tube synthesis of tetrahedrite can require multiple days or weeks. In this study, tetrahedrite co-doped with nickel and zinc was synthesized by two different approaches which both require significantly less time than the conventional furnace-ampoule technique. The first technique utilizes a short ball milling step followed by reactive spark plasma sintering to form tetrahedrite, and the entire process requires less than 2 h of total synthesis time. The second method involves mechanical alloying to obtain single-phase tetrahedrite, combined with spark plasma sintering (SPS) for densification. Thermoelectric properties were measured and compared for samples of composition Cu10Ni2-xZnxSb4S13 (x = 0, 0.5, 1, 1.5) made by both techniques. Peak ZT values were obtained for Cu10Ni2Sb4S13 with ZT = 0.66 at 673 K for SPS reacted and mechanically alloyed samples. Transport properties are comparable between the two techniques, and this provides evidence that supports reactive spark plasma sintering as a viable synthetic technique for tetrahedrite thermoelectric materials.

Spark plasma sintering synthesis of Ni1-xZnxFe2O4 …

AB - Tetrahedrite offers advantages over state-of-the-art thermoelectrics, such as lead telluride, because of its low cost and environmentally friendly composition. However, typical sealed-tube synthesis of tetrahedrite can require multiple days or weeks. In this study, tetrahedrite co-doped with nickel and zinc was synthesized by two different approaches which both require significantly less time than the conventional furnace-ampoule technique. The first technique utilizes a short ball milling step followed by reactive spark plasma sintering to form tetrahedrite, and the entire process requires less than 2 h of total synthesis time. The second method involves mechanical alloying to obtain single-phase tetrahedrite, combined with spark plasma sintering (SPS) for densification. Thermoelectric properties were measured and compared for samples of composition Cu10Ni2-xZnxSb4S13 (x = 0, 0.5, 1, 1.5) made by both techniques. Peak ZT values were obtained for Cu10Ni2Sb4S13 with ZT = 0.66 at 673 K for SPS reacted and mechanically alloyed samples. Transport properties are comparable between the two techniques, and this provides evidence that supports reactive spark plasma sintering as a viable synthetic technique for tetrahedrite thermoelectric materials.

It is concluded that the SPS synthesis can be applied to prepare the garnet-type Li ion conductor.

Keywords : solid electrolyte ,garnet-type Li ion conductor,spark plasma sintering,lithium batter

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  • Reactive Spark Plasma Sintering: Successes and …

    Spark Plasma Sintering: ..

  • Reactive Sintering of TaB2 Using Spark Plasma Sintering Method

    Spark plasma sintering ..

  • Spark plasma sintered/synthesized dense and …

    Spark Plasma Sintering Samples

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Spark Plasma Sintering and Densification Mechanisms …

Theimprovements achieved, mainly due to the formation of 'perfect'interfaces and due to nanostructuring, are correlated to the intrinsicmechanisms of the spark plasma sintering process.

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