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

Research output: Contribution to journalArticle

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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 Cu 3SbSe 3. It was found that slow cooling from the melt produced a multiphase material consisting of Cu 2Se and CuSbSe 2, but devoid of Cu 3SbSe 3. Cooling rapidly from the melt resulted in three-phase microstructures consisting of Cu 2Se, CuSbSe 2, and Cu 3SbSe 3. Subsequent annealing of the three-phase material between 325 and 400 °C shifted the composition toward nearly pure Cu 3SbSe 3-the target compound of this work. The kinetics of the transformation into Cu 3SbSe 3 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 Cu 2Se, CuSbSe 2, and Cu 3SbSe 3.

LanguageEnglish (US)
Pages1-11
Number of pages11
JournalJournal of Materials Science
DOIs
StateAccepted/In press - 2012

Profile

Cooling
Microstructure
Nanoindentation
Chemical analysis
Stoichiometry
Elastic moduli
Hardness
Annealing
Kinetics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Effect of thermal processing on the microstructure and composition of Cu-Sb-Se compounds. / Majsztrik, P. W.; Kirkham, M.; Garcia-Negron, V.; Lara-Curzio, Edgar; Skoug, E. J.; Morelli, D. T.

In: Journal of Materials Science, 2012, p. 1-11.

Research output: Contribution to journalArticle

Majsztrik PW, Kirkham M, Garcia-Negron V, Lara-Curzio E, Skoug EJ, Morelli DT. Effect of thermal processing on the microstructure and composition of Cu-Sb-Se compounds. Journal of Materials Science. 2012;1-11. Available from, DOI: 10.1007/s10853-012-6994-x
Majsztrik, P. W. ; Kirkham, M. ; Garcia-Negron, V. ; Lara-Curzio, Edgar ; Skoug, E. J. ; Morelli, D. T./ Effect of thermal processing on the microstructure and composition of Cu-Sb-Se compounds. In: Journal of Materials Science. 2012 ; pp. 1-11
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