Effect of thermal processing on the microstructure and composition of Cu–Sb–Se compounds

P. W. Majsztrik; M. Kirkham; V. Garcia-Negron; Edgar Lara-Curzio; E. J. Skoug; D. T. Morelli

doi:10.1007/s10853-012-6994-x

Effect of thermal processing on the microstructure and composition of Cu–Sb–Se compounds

P. W. Majsztrik, M. Kirkham, V. Garcia-Negron, Edgar Lara-Curzio, E. J. Skoug, D. T. Morelli

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13 Scopus citations

Abstract

We report on the effects of thermal processing on the microstructure and composition of a system with overall stoichiometry of 3Cu:1Sb:3Se with the aim of producing single-phase Cu₃SbSe₃. It was found that slow cooling from the melt produced a multiphase material consisting of Cu₂Se and CuSbSe₂, but devoid of Cu₃SbSe₃. Cooling rapidly from the melt resulted in three-phase microstructures consisting of Cu₂Se, CuSbSe₂, and Cu₃SbSe₃. Subsequent annealing of the three-phase material between 325 and 400 ºC shifted the composition toward nearly pure Cu₃SbSe₃—the target compound of this work. The kinetics of the transformation into Cu₃SbSe₃ was successfully described using a modified Avrami model which suggests that diffusion is the rate-controlling step. Values of Young’s modulus and hardness, obtained by nanoindentation, are reported for Cu₂Se, CuSbSe₂, and Cu₃SbSe₃.

Original language	English
Pages (from-to)	2188-2198
Number of pages	11
Journal	Journal of Materials Science
Volume	48
Issue number	5
DOIs	https://doi.org/10.1007/s10853-012-6994-x
State	Published - Mar 2013

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© Springer Science+Business Media New York.

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title = "Effect of thermal processing on the microstructure and composition of Cu–Sb–Se compounds",

abstract = "We report on the effects of thermal processing on the microstructure and composition of a system with overall stoichiometry of 3Cu:1Sb:3Se with the aim of producing single-phase Cu3SbSe3. It was found that slow cooling from the melt produced a multiphase material consisting of Cu2Se and CuSbSe2, but devoid of Cu3SbSe3. Cooling rapidly from the melt resulted in three-phase microstructures consisting of Cu2Se, CuSbSe2, and Cu3SbSe3. Subsequent annealing of the three-phase material between 325 and 400 ºC shifted the composition toward nearly pure Cu3SbSe3—the target compound of this work. The kinetics of the transformation into Cu3SbSe3 was successfully described using a modified Avrami model which suggests that diffusion is the rate-controlling step. Values of Young{\textquoteright}s modulus and hardness, obtained by nanoindentation, are reported for Cu2Se, CuSbSe2, and Cu3SbSe3.",

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AU - Majsztrik, P. W.

AU - Kirkham, M.

AU - Garcia-Negron, V.

AU - Lara-Curzio, Edgar

AU - Skoug, E. J.

AU - Morelli, D. T.

PY - 2013/3

Y1 - 2013/3

N2 - We report on the effects of thermal processing on the microstructure and composition of a system with overall stoichiometry of 3Cu:1Sb:3Se with the aim of producing single-phase Cu3SbSe3. It was found that slow cooling from the melt produced a multiphase material consisting of Cu2Se and CuSbSe2, but devoid of Cu3SbSe3. Cooling rapidly from the melt resulted in three-phase microstructures consisting of Cu2Se, CuSbSe2, and Cu3SbSe3. Subsequent annealing of the three-phase material between 325 and 400 ºC shifted the composition toward nearly pure Cu3SbSe3—the target compound of this work. The kinetics of the transformation into Cu3SbSe3 was successfully described using a modified Avrami model which suggests that diffusion is the rate-controlling step. Values of Young’s modulus and hardness, obtained by nanoindentation, are reported for Cu2Se, CuSbSe2, and Cu3SbSe3.

AB - We report on the effects of thermal processing on the microstructure and composition of a system with overall stoichiometry of 3Cu:1Sb:3Se with the aim of producing single-phase Cu3SbSe3. It was found that slow cooling from the melt produced a multiphase material consisting of Cu2Se and CuSbSe2, but devoid of Cu3SbSe3. Cooling rapidly from the melt resulted in three-phase microstructures consisting of Cu2Se, CuSbSe2, and Cu3SbSe3. Subsequent annealing of the three-phase material between 325 and 400 ºC shifted the composition toward nearly pure Cu3SbSe3—the target compound of this work. The kinetics of the transformation into Cu3SbSe3 was successfully described using a modified Avrami model which suggests that diffusion is the rate-controlling step. Values of Young’s modulus and hardness, obtained by nanoindentation, are reported for Cu2Se, CuSbSe2, and Cu3SbSe3.

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EP - 2198

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 5

ER -

Effect of thermal processing on the microstructure and composition of Cu–Sb–Se compounds

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