SYNTHESIS OF BINARY COPPER CHALCOGENIDES BY ALLOYING MECHANICAL

Authors
OHTANI T MOTOKI M KOH K OHSHIMA K
Citation
T. Ohtani et al., SYNTHESIS OF BINARY COPPER CHALCOGENIDES BY ALLOYING MECHANICAL, Materials research bulletin, 30(12), 1995, pp. 1495-1504
Citations number
26
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
30
Issue
12
Year of publication
1995
Pages
1495 - 1504
Database
ISI
SICI code
0025-5408(1995)30:12<1495:SOBCCB>2.0.ZU;2-G
Abstract
Copper sulfides (tetragonal Cu1.92S-Cu1.99S, rhombohedral Cu1.71S-Cu1. 89S, CuS), selenides (beta Cu2-xSe, Cu3Se2, gamma CuSe, CuSe2), and te llurides (Cu2-xTe, Cu3Te2) were prepared from mixtures of the elements by mechanical alloying (MA), using a high-energy ball mill. The compo unds were obtained by 60-120 min of MA. It is notable that two metasta ble high-pressure phases were obtained by MA: tetragonal Cu2-xS and py rite-type CuSe2. The tetragonal phase gradually transformed to the sta ble phase of djurleite when kept at room temperature. Cu1.71S-Cu1.89S also formed a metastable rhombohedral phase.