Thermoelectric properties of YBa2Cu3O7−-Na CoO2 segmented oxide ceramics

Wannasut, Pimpilai; Prayoonphokkharat, Poom; Jaiban, Panupong; Keawprak, Nittaya; Watcharapasorn, Anucha

doi:10.1016/j.matlet.2018.10.110

Cited by 10 publications

(3 citation statements)

References 20 publications

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“…The density of the ceramics was obtained by Archimedes' method using xylene as the liquid medium. The experimental density values were calculated using equation (1), where ρc is the density, w1 is the weight of sample in liquid, w2 is the weight of sample in air, w3 is the weight of sample after drying and ρRef is density of reference substance at room temperature (gcm -3 ) [9].…”

Section: Methodsmentioning

confidence: 99%

“…Some of these thermoelectric module designs can even harvest heat from the engine's exhaust stream into useful electricity by taking advantage of the Seebeck effect. The thermoelectric conversion efficiency is governed by the dimensionless figure of merit 2 / ZT S T  = where S is Seebeck coefficient,  electrical conductivity and  total thermal conductivity [1][2]. For a material with high electrical conductivity and moderate Seebeck coefficient,…”

Section: Introductionmentioning

confidence: 99%

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Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba_1-xLa_x)₂Cu₃O_7-δ ceramics

Yawirach

Wannasut

Boonsong

et al. 2023

J. Phys.: Conf. Ser.

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This work investigates the effects of various sintering conditions on phase, physical properties microstructure and thermal conductivity of Y(Ba1-x La x )2Cu3O7-δ where x = 0, 0.05, 0.10, 0.15, 0.20 and 0.25 mol fraction. The sintering conditions involved the sintering temperature of 920 °C and sintering time of 6, 8, 10 and 12 h. It was found that pure phase could be obtained in the samples sintered for 6 h regardless of composition. However, small amount of BaCuO2 secondary phase was obtained at other sintering time. The relatively low density and significantly reduced grain size was obtained in the samples with high La content (e.g. x = 0.20 and 0.25) regardless of the sintering time. This showed that La addition had apparent effects on sintering ability and grain growth. Phase analysis indicated that the structure changed from orthorhombic to tetragonal when the La concentration reached 0.20 and 0.25 mol fraction. SEM images of all ceramics also indicated irregular shaped grains. The effects of variation in density, microstructure and composition on the thermal conductivity of all ceramics were also discussed in details.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba_1-xLa_x)₂Cu₃O_7-δ ceramics

Yawirach

Wannasut

Boonsong

et al. 2023

J. Phys.: Conf. Ser.

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“…Wannasut [18] by Ag brazing. When sintering is adopted to produce segmented TE materials, the sintering temperature should be adjusted to avoid insufficient or overheating of the sintered thermoelectric materials, which may affect the TE properties of the materials.…”

Section: Introductionmentioning

confidence: 99%

Low Temperature Joining and High Temperature Application of Segmented Half Heusler/Skutterudite Thermoelectric Joints

Wang

et al. 2019

Materials

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A low temperature joining process has been developed to fabricate segmented half Heusler/skutterudite thermoelectric joints, and high temperature service behavior of the joints has been studied. The microstructure and electrical resistance across the joint before and after aging were investigated. The joint is well bonded and no cracks appear at the interfaces of the joint before and after aging, which can attribute to the formation of high melting point intermetallic compounds. The electrical resistance crosses the bonding layer smoothly and the contact resistance is low. These results show the process is effective, and promising for preparation of segmented thermoelectric devices.

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Thermoelectric Properties of YBa2Cu3O7−x-Ca3Co4O9 Segmented Oxide Ceramic

Wannasut

Jaiban

Keawprak

et al. 2019

Journal of Elec Materi

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Thermoelectric properties of YBa2Cu3O7−-Na CoO2 segmented oxide ceramics

Cited by 10 publications

References 20 publications

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba_1-xLa_x)₂Cu₃O_7-δ ceramics

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba_1-xLa_x)₂Cu₃O_7-δ ceramics

Low Temperature Joining and High Temperature Application of Segmented Half Heusler/Skutterudite Thermoelectric Joints

Thermoelectric Properties of YBa2Cu3O7−x-Ca3Co4O9 Segmented Oxide Ceramic

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Thermoelectric properties of YBa2Cu3O7−-Na CoO2 segmented oxide ceramics

Cited by 10 publications

References 20 publications

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba1-x La x )2Cu3O7-δ ceramics

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba1-x La x )2Cu3O7-δ ceramics

Low Temperature Joining and High Temperature Application of Segmented Half Heusler/Skutterudite Thermoelectric Joints

Thermoelectric Properties of YBa2Cu3O7−x-Ca3Co4O9 Segmented Oxide Ceramic

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Product

Resources

About

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba_1-xLa_x)₂Cu₃O_7-δ ceramics

Effect of sintering time on phase, physical properties, microstructure and thermal conductivity of Y(Ba_1-xLa_x)₂Cu₃O_7-δ ceramics