Decoupling Seebeck coefficient and resistivity, and simultaneously optimizing thermoelectric and mechanical performances for n-type BiTeSe alloy by multi-pass equal channel angular extrusion
Materials Science and Engineering: B(2021)
摘要
•Decoupling Seebeck coefficient and resistivity.•The mechanism of grain refinement was investigated by experiment and simulation.•Increasing the number of extrusion pass could not refine the grain already refined.
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关键词
Thermoelectric materials,BiTeSe,Equal channel angular extrusion,Grain refinement,Point defects
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