Spark plasma sintering of PbTe thermoelectric bulk materials with small grains

Chia Hung Kuo, Chii-Shyang Hwang, Jie Ren Ku, Ming Shan Jeng, Fang Hei Tsau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

PbTe is a conventional thermoelectric material for thermoelectric generator at intermediate temperature. Small grain size effect has been reported to improve PbTe ZT values (figure of merit). We report a combination process of attrition milling and spark plasma sintering (SPS) for preparing PbTe bulk materials with small grain sizes. The PbTe powders were milled by attrition under 600 rpm for 6-96 h and followed by SPS process under the sintering temperature of 573-773 K, the heating rate of 100 K/min, and the sintering pressure of 50 MPa. The powders and bulk materials as-prepared were then studied by X-ray diffraction patterns, scanning electron microscopy images, and transmission electron microscopy images. Transport properties of polycrystalline PbTe bulks were evaluated through temperature dependent thermal conductivity measurements.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008
Pages1191-1193
Number of pages3
DOIs
Publication statusPublished - 2008 Aug 20
Event1st ASME Micro/Nanoscale Heat Transfer International Conference, MNHT08 - Tainan, Taiwan
Duration: 2008 Jan 62008 Jan 9

Publication series

Name2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008
VolumePART B

Other

Other1st ASME Micro/Nanoscale Heat Transfer International Conference, MNHT08
CountryTaiwan
CityTainan
Period08-01-0608-01-09

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

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