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Last two decades have witnessed significant progress in thermoelectric research,to which materials processing has crucial contributions.Compared with traditional zone-melting method used for fabricating bismuth telluride alloys,new powder-based processes have more freedom for manipulating nanostructures and nanocomposites.Thermoelectric performance enhancement is realized in most thermoelectric materials by introducing fine-grained and nano-composite structures with accurately controlled compositions.This review gives a comprehensive summary on the processing aspects of thermoelectric materials with three focuses on the powder synthesis,advanced sintering process and the formation of nano structures in bulk materials.
Last two decades have witnessed significant progress in thermoelectric research, to which materials processing has been interest contributions.Compared with traditional zone-melting method used for fabricating bismuth telluride alloys, new powder-based processes have more freedom for manipulating nanostructures and nanocomposites. Thermoelectric performance enhancement is realized in most thermoelectric materials by introducing fine-grained and nano-composite structures with precisely controlled compositions. this review gives a comprehensive summary on the processing aspects of thermoelectric materials with three focuses on the powder synthesis, advanced sintering process and the formation of nano structures in bulk materials.