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Room temperature Young's modulus, shear modulus, Poisson's ratio and hardness of PbTe-PbS thermoelectric materials

Abstract

Two-phase PbTe-PbS materials, in which PbS is a nanostructured phase, are promising thermoelectric materials for the direct conversion of heat energy into electricity. In this study, a Vickers indentation mean hardness of 1.18 {+-} 0.09 GPa was measured for hot pressed specimens Pb{sub 0.95}Sn{sub 0.05}Te-PbS 8% while the mean hardness of cast specimens was 0.68 {+-} 0.07 GPa. The mean fracture toughness of the not pressed specimens was estimated as 0.35 {+-} 0.04 MPa m{sup 1/2} via Vickers indentation. Resonant Ultrasound Spectroscopy (RUS) measurements on hot pressed specimens gave mean values of Young's modulus, shear modulus and Poisson's ratio of 53.1 GPa, 21.4 GPa and 0.245, respectively while for the cast specimens the Young's and shear moduli were about 10% lower than for the hot pressed, with a mean value of Poisson's ratio of 0.245. The differences between the hardness and elastic moduli values for the cast and hot pressed specimens are discussed.
Authors:
Ni, Jennifer E; [1]  Case, Eldon D., E-mail: casee@egr.msu.edu; [1]  Khabir, Kristen N; Stewart, Ryan C; [1]  Wu, Chun-I; Hogan, Timothy P; [2]  Timm, Edward J; [3]  Girard, Steven N; Kanatzidis, Mercouri G [4] 
  1. Chemical Engineering and Materials Science Department, Michigan State University, East Lansing, MI 48824 (United States)
  2. Electrical and Computer Engineering Department, Michigan State University, East Lansing, MI 48824 (United States)
  3. Mechanical Engineering Department, Michigan State University, East Lansing, MI 48824 (United States)
  4. Department of Chemistry, Northwestern University, Evanston, IL (United States)
Publication Date:
Jun 15, 2010
Product Type:
Journal Article
Resource Relation:
Journal Name: Materials Science and Engineering. B, Solid-State Materials for Advanced Technology; Journal Volume: 170; Journal Issue: 1-3; Other Information: DOI: 10.1016/j.mseb.2010.02.026; PII: S0921-5107(10)00125-X; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.
Subject:
36 MATERIALS SCIENCE; ELASTICITY; FRACTURE PROPERTIES; HARDNESS; LEAD SULFIDES; LEAD TELLURIDES; NANOSTRUCTURES; POWDERS; PRESSURE RANGE GIGA PA; PRESSURE RANGE MEGA PA; PROCESSING; SHEAR; SPECTROSCOPY; THERMOELECTRIC MATERIALS; YOUNG MODULUS; CHALCOGENIDES; LEAD COMPOUNDS; MATERIALS; MECHANICAL PROPERTIES; PRESSURE RANGE; SULFIDES; SULFUR COMPOUNDS; TELLURIDES; TELLURIUM COMPOUNDS
OSTI ID:
21551996
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0921-5107; MSBTEK; TRN: NL10S3762030256
Availability:
Available from http://dx.doi.org/10.1016/j.mseb.2010.02.026
Submitting Site:
NLN
Size:
page(s) 58-66
Announcement Date:
May 08, 2012

Citation Formats

Ni, Jennifer E, Case, Eldon D., E-mail: casee@egr.msu.edu, Khabir, Kristen N, Stewart, Ryan C, Wu, Chun-I, Hogan, Timothy P, Timm, Edward J, Girard, Steven N, and Kanatzidis, Mercouri G. Room temperature Young's modulus, shear modulus, Poisson's ratio and hardness of PbTe-PbS thermoelectric materials. Netherlands: N. p., 2010. Web. doi:10.1016/j.mseb.2010.02.026.
Ni, Jennifer E, Case, Eldon D., E-mail: casee@egr.msu.edu, Khabir, Kristen N, Stewart, Ryan C, Wu, Chun-I, Hogan, Timothy P, Timm, Edward J, Girard, Steven N, & Kanatzidis, Mercouri G. Room temperature Young's modulus, shear modulus, Poisson's ratio and hardness of PbTe-PbS thermoelectric materials. Netherlands. doi:10.1016/j.mseb.2010.02.026.
Ni, Jennifer E, Case, Eldon D., E-mail: casee@egr.msu.edu, Khabir, Kristen N, Stewart, Ryan C, Wu, Chun-I, Hogan, Timothy P, Timm, Edward J, Girard, Steven N, and Kanatzidis, Mercouri G. 2010. "Room temperature Young's modulus, shear modulus, Poisson's ratio and hardness of PbTe-PbS thermoelectric materials." Netherlands. doi:10.1016/j.mseb.2010.02.026. https://www.osti.gov/servlets/purl/10.1016/j.mseb.2010.02.026.
@misc{etde_21551996,
title = {Room temperature Young's modulus, shear modulus, Poisson's ratio and hardness of PbTe-PbS thermoelectric materials}
author = {Ni, Jennifer E, Case, Eldon D., E-mail: casee@egr.msu.edu, Khabir, Kristen N, Stewart, Ryan C, Wu, Chun-I, Hogan, Timothy P, Timm, Edward J, Girard, Steven N, and Kanatzidis, Mercouri G}
abstractNote = {Two-phase PbTe-PbS materials, in which PbS is a nanostructured phase, are promising thermoelectric materials for the direct conversion of heat energy into electricity. In this study, a Vickers indentation mean hardness of 1.18 {+-} 0.09 GPa was measured for hot pressed specimens Pb{sub 0.95}Sn{sub 0.05}Te-PbS 8% while the mean hardness of cast specimens was 0.68 {+-} 0.07 GPa. The mean fracture toughness of the not pressed specimens was estimated as 0.35 {+-} 0.04 MPa m{sup 1/2} via Vickers indentation. Resonant Ultrasound Spectroscopy (RUS) measurements on hot pressed specimens gave mean values of Young's modulus, shear modulus and Poisson's ratio of 53.1 GPa, 21.4 GPa and 0.245, respectively while for the cast specimens the Young's and shear moduli were about 10% lower than for the hot pressed, with a mean value of Poisson's ratio of 0.245. The differences between the hardness and elastic moduli values for the cast and hot pressed specimens are discussed.}
doi = {10.1016/j.mseb.2010.02.026}
journal = {Materials Science and Engineering. B, Solid-State Materials for Advanced Technology}
issue = {1-3}
volume = {170}
place = {Netherlands}
year = {2010}
month = {Jun}
}