Work

Abnormal Crystal Growth and Transport Properties of Sintered (Bi0.2Sb0.8)2Te3 Thermoelectric Alloys with Ag Addition.

Year: 2002

Type: article

Abstract: A combination of mechanical alloying and pulse discharge sintering was employed to fabricate the bulk (Bi0.2Sb0.8)2Te3 thermoelectric alloys with addition of Ag up to 1.0mass%. Addition of Ag up to 0.5mass% has little influence on the microstructure of the compact. However, when 1.0mass% Ag was added, an abnormal grain growth was observed in the compact during sintering at 618K. In this bulk sample, Ag particles were detected by scanning/transmission electron microscope. Thermoelectric property measurements indicate that addition of Ag optimizes the power factor, but simultaneously considerably enhances the thermal conductivity and finally markedly degrades the room-temperature figure of merit of the (Bi0.2Sb0.8)2Te3 alloy.

Source: Journal of the Japan Society of Powder and Powder Metallurgy

DOI: 10.2497/jjspm.49.1009

Authors: Xue-Dong LIU, Cha-Hurn Bae, Yong-Ho Park

Institutions: AIST Tohoku, National Institute of Advanced Industrial Science and Technology, Pukyong National University, Pusan National University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

OpenAlex ID: W2321774006

FWCI:

Cites: 9

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Related to: 10