Síntesis mecanoquímica de un compuesto termoeléctrico nanocristalino

H. Rojas-Chávez; F. Reyes-Carmona; D. Jaramillo-Vigueras

doi:10.3989/revmetalmadrid.1020

Síntesis mecanoquímica de un compuesto termoeléctrico nanocristalino

Translated title of the contribution: Mechanochemical synthesis of a nanocrystalline thermoelectric compound

H. Rojas-Chávez, F. Reyes-Carmona, D. Jaramillo-Vigueras

Centro de Investigación e Innovación Tecnológica (CIITEC)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Solid state chemical reactions were studied during high energy ball milling. Mechanosynthesis (MSY) of mixtures of high purity αPbO and Te powders under atmospheric conditions were processed. This process was selected to minimize technical difficulties as those commonly found in conventional processes involving melting-growth or sublimation of starting materials. It has been found that as particle size is reduced, structural defects are increased and hence solid state chemical reactions are enhanced. In the MSY of αPbO-Te, the phases formed are the same as those formed during conventional process (melt-growth). The alloyed powders obtained were characterized by X-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy.

Translated title of the contribution	Mechanochemical synthesis of a nanocrystalline thermoelectric compound
Original language	Spanish
Pages (from-to)	548-554
Number of pages	7
Journal	Revista de Metalurgia (Madrid)
Volume	46
Issue number	6
DOIs	https://doi.org/10.3989/revmetalmadrid.1020
State	Published - Nov 2010

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AU - Rojas-Chávez, H.

AU - Reyes-Carmona, F.

AU - Jaramillo-Vigueras, D.

PY - 2010/11

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N2 - Solid state chemical reactions were studied during high energy ball milling. Mechanosynthesis (MSY) of mixtures of high purity αPbO and Te powders under atmospheric conditions were processed. This process was selected to minimize technical difficulties as those commonly found in conventional processes involving melting-growth or sublimation of starting materials. It has been found that as particle size is reduced, structural defects are increased and hence solid state chemical reactions are enhanced. In the MSY of αPbO-Te, the phases formed are the same as those formed during conventional process (melt-growth). The alloyed powders obtained were characterized by X-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy.

AB - Solid state chemical reactions were studied during high energy ball milling. Mechanosynthesis (MSY) of mixtures of high purity αPbO and Te powders under atmospheric conditions were processed. This process was selected to minimize technical difficulties as those commonly found in conventional processes involving melting-growth or sublimation of starting materials. It has been found that as particle size is reduced, structural defects are increased and hence solid state chemical reactions are enhanced. In the MSY of αPbO-Te, the phases formed are the same as those formed during conventional process (melt-growth). The alloyed powders obtained were characterized by X-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy.

KW - APbO-Te system

KW - PbTe

KW - Solid state chemical reaction

KW - Structural defects

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DO - 10.3989/revmetalmadrid.1020

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JO - Revista de Metalurgia (Madrid)

JF - Revista de Metalurgia (Madrid)

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ER -

Síntesis mecanoquímica de un compuesto termoeléctrico nanocristalino

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