The condensed-phase system Cu–Pd–Se was investigated by means of dry syntheses from elements in evacuated silica glass tubes at 650 °C, 550 °C, 400 °C, and 300 °C. Synthetized phases were analysed by electron microprobe and textural studies in polished sections. At 650 °C an extensive selenide liquid field covers central portions of the system, coexisting with a limited choice of Pd selenides, Cu2−xSe, alloys, and a (Cu,Pd)Se2 solid solution. The selenide melt recedes to the Pd side of the system at 550 °C and its remnants persist at 400 °C. At the lower temperature, the gamut of Pd selenides becomes richer, and especially Pd4Se and Pd17Se15 display significant solubility of Cu. The composition range of (Cu,Pd)Se2 broadens and moves towards Cu-richer compositions as temperature decreases; CuSe and CuSe2 appear at 300 °C. The synthetic analogue of jaguéite, Cu2Pd3Se4, is present at 400 °C and 300 °C, at Se concentrations above the Cu2−xSe–Pd17Se15 line. At all examined temperatures, the individualized CuPd alloy dissolves Se, up to ~5 at% at low temperatures.
Article navigation
JOURNAL ARTICLE
Exploratory studies of the Cu–Pd–Se system at 650 °C, 550 °C, 400 °C, and 300 °C
Emil Makovicky
Emil Makovicky
1
Department of Geoscience and Natural Resources Management, University of Copenhagen, Østervoldgade 10, 1350 Copenhagen, Denmark*
Corresponding author, e-mail: emilm@ign.ku.dk
Search for other works by this author on:
Sven Karup-Møller
Sven Karup-Møller
2
Department of Civil Engineering, Danish Technical University, 2800 Kongens Lyngby, Denmark
Search for other works by this author on:
European Journal of Mineralogy (2017) 29 (4): 645-652.
Published:
August 01, 2017
Article history
-
Views Icon
Views
-
CiteCitation
Emil Makovicky, Sven Karup-Møller; Exploratory studies of the Cu–Pd–Se system at 650 °C, 550 °C, 400 °C, and 300 °C. European Journal of Mineralogy ; 29 (4): 645–652. doi: https://doi.org/10.1127/ejm/2017/0029-2651
Download citation file:
× -
Share Icon
Share
-
Tools Icon
Tools
Search
Search
Sign in
Don't already have an account? Register
You could not be signed in. Please check your email address / username and password and try again.
Index Terms/Descriptors