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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50296

Title: Bloating in (Pb0.95Sn0.05Te)0.92(PbS)0.08-0.055%PbI2 Thermoelectric Specimens as a Result of Processing Conditions
Authors: Jennifer E. Ni
Eldon D. Case
Ryan Stewart
Chun-I. Wu
Timothy P. Hogan
Mercouri G. Kanatzidis
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: Thermoelectrics
porosity
Young’s modulus
resonant ultrasound spectroscopy
Date: 2012-06
Issue Date: 2018-09-28T08:07:13Z
Publisher: Journal of Electronic Materials
Abstract: Abstract: Lead chalcogenides such as (Pb0.95Sn0.05Te)0.92(PbS)0.08-0.055%PbI2 have received attention due to their encouraging thermoelectric properties. For the hot pressing (HP) and pulsed electric current sintering (PECS) techniques used in this study, decomposition reactions can generate porosity (bloating). Porosity in turn can degrade electrical, thermal, and mechanical properties. In this study, microstructural observations (scanning electron microscopy) and room-temperature elasticity measurements (resonant ultrasound spectroscopy) were used to characterize bloating generated during post-densification anneals. Although every HP specimen bloated during post-densification annealing, no bloating was observed for the PECS specimens processed from dry milled only powders. The lack of bloating for the annealed PECS specimens may be related to the electrical discharge intrinsic in the PECS process, which reportedly cleans the powder particle surfaces during densification.
Relation: 41(6) pp.1153–1158
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50296
Appears in Collections:[機械與機電工程學系] 期刊論文

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