한국분말재료학회지 (Journal of Powder Materials)

  • 제23권2호
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  • Pages.120-125
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  • 2016
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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Investigation of Ball Size Effect on Microstructure and Thermoelectric Properties of p-type BiSbTe by Mechanical Alloying

  • Lwin, May Likha (Division of Advanced Materials Engineering, Kongju National University) ;
  • Yoon, Sang-min (Division of Advanced Materials Engineering, Kongju National University) ;
  • Madavali, Babu (Division of Advanced Materials Engineering, Kongju National University) ;
  • Lee, Chul-Hee (Division of Advanced Materials Engineering, Kongju National University) ;
  • Hong, Soon-Jik (Division of Advanced Materials Engineering, Kongju National University)
  • 투고 : 2016.03.28
  • 심사 : 2016.04.20
  • 발행 : 2016.04.28
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초록

P-type ternary $Bi_{0.5}Sb_{1.5}Te_3$ alloys are fabricated via mechanical alloying (MA) and spark plasma sintering (SPS). Different ball sizes are used in the MA process, and their effect on the microstructure; hardness, and thermoelectric properties of the p-type BiSbTe alloys are investigated. The phases of milled powders and bulks are identified using an X-ray diffraction technique. The morphology of milled powders and fracture surface of compacted samples are examined using scanning electron microscopy. The morphology, phase, and grain structures of the samples are not altered by the use of different ball sizes in the MA process. Measurements of the thermoelectric (TE) transport properties including the electrical conductivity, Seebeck coefficient, and power factor are measured at temperatures of 300-400 K for samples treated by SPS. The TE properties do not depend on the ball size used in the MA process.

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피인용 문헌

  1. Mechanical and thermoelectric properties of Bi2−xSbxTe3 prepared by using encapsulated melting and hot pressing vol.69, pp.8, 2016, https://doi.org/10.3938/jkps.69.1328
  2. Flexible Thermoelectric Device Using Thick Films for Energy Harvesting from the Human Body vol.54, pp.6, 2017, https://doi.org/10.4191/kcers.2017.54.6.07
  3. Investigation of Spark Plasma Sintering Temperature on Microstructure and Thermoelectric Properties of p-type Bi-Sb-Te alloys vol.24, pp.2, 2017, https://doi.org/10.4150/KPMI.2017.24.2.115