Microstructure, mechanical properties and thermoelectric properties of p-type Te-doped Bi0.5Sb1.5Te3 compounds fabricated by hot extrusion

1997 ◽  
Vol 16 (14) ◽  
pp. 1153-1156 ◽  
Author(s):  
J. Seo ◽  
D. Lee ◽  
C. Lee ◽  
K. Park
Keyword(s):  
Mechanical Properties ◽  
Thermoelectric Properties ◽  
Hot Extrusion ◽  
P Type

Microstructure, Mechanical Properties, and Thermoelectric Properties of Hot-Extruded P-Type Te-Doped Bi0.5Sb1.5Te3 Compounds

1997 ◽  
Vol 478 ◽  
Author(s):  
K. Park ◽  
J. Seo ◽  
C. Lee
Keyword(s):  
Mechanical Properties ◽  
Dynamic Recrystallization ◽  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Bending Strength ◽  
Hot Extrusion ◽  
Extrusion Ratio ◽  
Crystalline Quality ◽  
High Crystalline Quality ◽  
P Type

AbstractThe p-type Bi0.5Sb1.5Te3 compounds with Te dopant (4.0 and 6.0 wt%) and without dopant were fabricated by hot extrusion in the temperature range of 300 to 510 °C under an extrusion ratio of 20:1. The undoped and Te doped compounds were highly dense and showed high crystalline quality. The grains contained many dislocations and were fine equiaxed (˜ 1.0 μm) owing to the dynamic recrystallization during the extrusion. The hot extrusion gave rise to the preferred orientation of grains. The bending strength and the figure of merit of the undoped and Te doped compounds were increased with increasing the extrusion temperature. The Te dopant significantly increased the figure of merit. The values of the figure of merit of the undoped and 4.0 wt% Te-doped compounds hot extruded at 440 °C were 2.11×10−3/K and 2.94×10−3/K, respectively.

Fabrication of Bi-Te Based Thermoelectric Semiconductors by Using Hybrid Powders

2005 ◽  
Vol 297-300 ◽  
pp. 875-880
Author(s):  
Cheol Ho Lim ◽  
Ki Tae Kim ◽  
Yong Hwan Kim ◽  
Dong Choul Cho ◽  
Young Sup Lee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Single Crystals ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Figure Of Merit ◽  
Bending Strength ◽  
Mixing Ratio ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
P Type

P-type Bi0.5Sb1.5Te3 compounds doped with 3wt% Te were fabricated by spark plasma sintering and their mechanical and thermoelectric properties were investigated. The sintered compounds with the bending strength of more than 50MPa and the figure-of-merit 2.9×10-3/K were obtained by controlling the mixing ratio of large powders (PL) and small powders (PS). Compared with the conventionally prepared single crystal thermoelectric materials, the bending strength was increased up to more than three times and the figure-of-merit Z was similar those of single crystals. It is expected that the mechanical properties could be improved by using hybrid powders without degradation of thermoelectric properties.

Influence of Extrusion Temperature on the Thermoelectric Properties of p-Type Ag Added (Bi0.25Sb0.75)2Te3 Alloys Prepared by MA-PDS

2007 ◽  
Vol 336-338 ◽  
pp. 846-849
Author(s):  
Wang Kee Min ◽  
Chang Ho Lee ◽  
Yong Ho Park ◽  
Ik Min Park
Keyword(s):  
Thermoelectric Properties ◽  
Power Factor ◽  
Raw Materials ◽  
Pulse Discharge ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Extrusion Temperature ◽  
Mechanically Alloyed ◽  
P Type ◽  
Sintering Method

The direct extrusion process using the powder as raw materials was applied to prepare the thermoelectric materials. The mechanically alloyed powders of Ag added (Bi0.25Sb0.75)2Te3 were extruded by pulse discharge sintering method in the temperature range of 345°C ~ 425°C. High quality products were obtained by hot-extrusion method and their texture and thermoelectric properties were measured. The intensity of (110) plane increased with extrusion temperature up to 385°C and altered in the range of above 405°Cwhich coincided with the variation of power factor. The measured Power factor ranged from 3.5 ~ 4.0 × 10-3 W/K2·m. The figure of merit (Z) of the material extruded at 385°C was 3.1 × 10-3 /K, the highest value among the prepared materials.

Enhanced thermoelectric and mechanical properties of p-type skutterudites with in situ formed Fe3Si nanoprecipitate

2017 ◽  
Vol 4 (10) ◽  
pp. 1697-1703 ◽  
Author(s):  
Shengyuan Peng ◽  
Jianhui Sun ◽  
Bo Cui ◽  
Xianfu Meng ◽  
Dandan Qin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Thermoelectric Properties ◽  
Indentation Fracture ◽  
Indentation Fracture Toughness ◽  
P Type

Hardness and indentation fracture toughness of La0.8Ti0.1Ga0.1Fe3CoSb12can be improved byin situformed Fe3Si, without sacrificing thermoelectric properties.

Studies on Microstructure and Thermoelectric Properties of p-Type Bi-Sb-Te Based Alloys by Gas Atomization and Hot Extrusion Processes

2016 ◽  
Vol 46 (5) ◽  
pp. 2915-2920 ◽  
Author(s):  
Ki-Chan Park ◽  
Babu Madavali ◽  
Eun-Bin Kim ◽  
Kyung-Wan Koo ◽  
Soon-Jik Hong
Keyword(s):  
Thermoelectric Properties ◽  
Hot Extrusion ◽  
Gas Atomization ◽  
P Type

Influence of Hot-Extrusion on Mechanical Properties of AZ31B Magnesium Alloy Sheet

2005 ◽  
Vol 15 (1) ◽  
pp. 25-30
Author(s):  
Yong-Gil Kim ◽  
Hak-Kyu Choi ◽  
Min-Cheol Kang ◽  
Hae-Yong Jeong ◽  
Cha-Hurn Bae
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Alloy Sheet ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

Enhancing thermoelectric properties of p-type CoSb3 skutterudite by Fe doping

2021 ◽  
Vol 127 ◽  
pp. 105721
Author(s):  
Suchitra Yadav ◽  
Sujeet Chaudhary ◽  
Dinesh K. Pandya
Keyword(s):  
Thermoelectric Properties ◽  
Fe Doping ◽  
P Type

scholarly journals Giant Tuning of Electronic and Thermoelectric Properties by Epitaxial Strain in p-Type Sr-Doped LaCrO3 Transparent Thin Films

2021 ◽  
Author(s):  
Dong Han ◽  
Rahma Moalla ◽  
Ignasi Fina ◽  
Valentina M. Giordano ◽  
Marc d’Esperonnat ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermoelectric Properties ◽  
Epitaxial Strain ◽  
P Type
Sign in / Sign up

Export Citation Format

Share Document