Enhancement of mechanical properties and thermoelectric performance of spark plasma sintered P-type Bismuth Telluride by powder surface oxide reduction

2020 ◽  
pp. 157657
Author(s):  
Ahmed A. Abdelnabi ◽  
Vickram Lakhian ◽  
Joseph R. McDermid ◽  
Yu-Chih Tseng ◽  
James S. Cotton
Keyword(s):  
Mechanical Properties ◽  
Bismuth Telluride ◽  
Surface Oxide ◽  
Thermoelectric Performance ◽  
Oxide Reduction ◽  
Powder Surface ◽  
Spark Plasma ◽  
P Type

Structural and mechanical properties of spark plasma sintered n- and p-type bismuth telluride alloys

2007 ◽  
Vol 1 (6) ◽  
pp. 235-237 ◽  
Author(s):  
Harald Böttner ◽  
Dirk G. Ebling ◽  
A. Jacquot ◽  
J. König ◽  
L. Kirste ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bismuth Telluride ◽  
Spark Plasma ◽  
P Type

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.

Thermoelectric, Structural, and Mechanical Properties of Spark-Plasma-Sintered Submicro- and Microstructured p-Type Bi0.5Sb1.5Te3

2012 ◽  
Vol 41 (6) ◽  
pp. 1546-1553 ◽  
Author(s):  
N. Bomshtein ◽  
G. Spiridonov ◽  
Z. Dashevsky ◽  
Y. Gelbstien
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma ◽  
P Type

Thermoelectric performance of textured Bi2Te 3-based sintered materials prepared by spark plasma sintering

2003 ◽  
Vol 793 ◽  
Author(s):  
Lidong Chen ◽  
Jun Jiang ◽  
Xun Shi
Keyword(s):  
Spark Plasma Sintering ◽  
Bending Strength ◽  
Thermoelectric Performance ◽  
Polycrystalline Materials ◽  
Plasma Sintering ◽  
Grain Orientations ◽  
Thermoelectric Transport Properties ◽  
Spark Plasma ◽  
P Type ◽  
Sintered Materials

ABSTRACTThermoelectric performance of polycrystalline materials is greatly influenced by their microstructures including grain sizes, grain boundaries, grain orientations in anisotropic compounds, etc. The material microstructures are sensitive to the preparation processes and the starting materials. In the present study, n-type and p-type Bi2Te3-based sintered materials with highly preferred grain orientations have been fabricated through a spark plasma sintering (SPS) technique, by controlling the particle sizes of the starting powder and other sintering process parameters. The obtained textured Bi2Te3-based materials show a high mechanical strength as 80MPa in bending strength, which is 7 to 8 times as that of the melted ingot materials, and a significant anisotropy in thermoelectric transport properties. The optimal figure of merit (ZT) of the sintered materials in the direction perpendicular to the pressing direction (with c-axis preferred orientation) is comparable to that of the zone-melted ingots in the same crystallographic orientation.

scholarly journals Cost effective synthesis of p-type Zn-doped MgAgSb by planetary ball-milling with enhanced thermoelectric properties

RSC Advances ◽  
2018 ◽  
Vol 8 (62) ◽  
pp. 35353-35359 ◽  
Author(s):  
Yanyan Zheng ◽  
Chengyan Liu ◽  
Lei Miao ◽  
Hong Lin ◽  
Jie Gao ◽  
...  
Keyword(s):  
Ball Milling ◽  
Spark Plasma Sintering ◽  
Thermoelectric Properties ◽  
Cost Effective ◽  
Thermoelectric Performance ◽  
Plasma Sintering ◽  
Planetary Ball Milling ◽  
Spark Plasma ◽  
Effective Synthesis ◽  
P Type

Zn doped MgAgSb with improved purity and thermoelectric performance was synthesized via common planetary ball milling and spark plasma sintering.

High thermoelectric performance of single phase p-type cerium-filled skutterudites by dislocation engineering

2018 ◽  
Vol 6 (41) ◽  
pp. 20128-20137 ◽  
Author(s):  
Xianfu Meng ◽  
Yuan Liu ◽  
Bo Cui ◽  
Dandan Qin ◽  
Jian Cao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Power Generation ◽  
Power Factor ◽  
High Power ◽  
Single Phase ◽  
Intermediate Temperature ◽  
Thermoelectric Performance ◽  
High Power Factor ◽  
Filled Skutterudites ◽  
P Type

Filled skutterudites, possessing a high power factor and good mechanical properties, have attracted intensive attention for the intermediate-temperature power generation.

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