Process Controllability of Thermoelectric Properties of (Bi2Te3)0.2(Sb2Te3) 0.8 on the Root of Bulk Mechanical Alloying

Yasushi Iwaisako, Tatsuhiko Aizawa, Atsushi Yamamoto, Toshitaka Ohta

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Bulk Mechanical Alloying (BMA) is proposed to produce p-type Bi2Te3-Sb2Te3 thermoelectric materials with large yield and without any contamination. Because of the solid-state alloyment through this process, no melting nor solidification process is necessary to yield the targeting composition of this type of thermoelectric materials. Furthermore, hot pressing is applied for densification by varying both the pressure and the holding temperature. Process parameter dependency of thermoelectric properties is investigated for three different BMA samples.

Original languageEnglish
Pages (from-to)958-961
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume45
Issue number10
Publication statusPublished - 1998 Oct
Externally publishedYes

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Keywords

  • Bulk mechanical alloying
  • Figure of merit
  • Pressure
  • Sintering temperature
  • Thermoelectric material

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

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