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Hot pressing and nanostructuring of Bi 90 Sb 10 alloys to concurrently improve mechanical and thermoelectric properties
Author(s) -
Heinz Nicholas A.,
Howell Sarah,
Wang Heng,
Ikeda Teruyuki,
Snyder G. Jeffrey
Publication year - 2012
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201228365
Subject(s) - materials science , thermoelectric effect , solidus , microstructure , electrical resistivity and conductivity , hot pressing , thermoelectric materials , thermal conductivity , pressing , work (physics) , yield (engineering) , metallurgy , composite material , thermodynamics , physics , alloy , electrical engineering , engineering
The microstructure of Bi 90 Sb 10 composites with separate additions of Ag and As was studied, and measurements of the room temperature transport properties were made to see the effects of hot pressing with and without precipitates. The most successful nanostructured Bi 90 Sb 10 samples were those containing As when annealed for durations of 3 days or less near the solidus temperature. The transport measurements showing similar electrical resistivity and decreased thermal conductivity with the addition of precipitates at room temperature demonstrates the potential of this bulk nanostructuring and synthesis approach in this material system. With further study, this work could be helpful in creating similar complex nanostructured systems which have the potential to yield high‐efficiency thermoelectric materials for low temperature applications.