Cited 0 time in webofscience Cited 0 time in scopus

나노 분말을 Spark Plasma 소결해 제조한 PbTe의 열전 특성

Title
나노 분말을 Spark Plasma 소결해 제조한 PbTe의 열전 특성
Translated Title
Thermoelectric Properties of PbTe Prepared by Spark Plasma Sintering of Nano Powders
Authors
전은영김호영김참오경식정태주
DGIST Authors
김호영김참
Issue Date
2018
Citation
한국분말야금학회지, 25(5), 384-389
Type
Article
Keywords
ThermoelectricPbTeNano powderThermal conductivitySpark plasma sintering
ISSN
1225-7591
Abstract
Nanoparticles of PbTe are prepared via chemical reaction of the equimolar aqueous solutions of Pb(CH3COO)2 and Te at 120°C. The size of the obtained particles is 100 nm after calcination in a hydrogen atmosphere. Dense specimens for the thermoelectric characterization are produced by spark plasma sintering of prepared powders at 400°C to 500°C under 80 MPa for 5 min. The relative densities of the prepared specimens reach approximately 97% and are identified as cubic based on X-ray diffraction analyses. The thermoelectric properties are evaluated between 100°C and 300°C via electrical conductivity, Seebeck coefficient, and thermal conductivity. Compared with PbTe ingot, the reduction of the thermal conductivities by more than 30% is verified via phonon scattering at the grain boundaries, which thus contributes to the increase in the figure of merit.
URI
http://hdl.handle.net/20.500.11750/9434
DOI
10.4150/KPMI.2018.25.5.384
Publisher
한국분말야금학회
Related Researcher
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles
Magnet-Controlled Materials Research Group1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE