SHS in the Cu–Se System

G. R. Nigmatullina^a^,^b^, *, D. Yu. Kovalev^a^, **, and N. N. Bickulova^b

^aMerzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia

^bSterlitamak Branch, Bashkirian State University, Sterlitamak, Russia

Correspondence to: *e-mail: enigma@ism.ac.ru
Correspondence to: **e-mail: kovalev@ism.ac.ru

Received 20 May, 2021

Abstract—Cu_2 – хSe compounds were prepared by SHS method from (2 – x)Cu + Se powder mixtures (x = 0.0, 0.15, and 0.3) and characterized by XRD and SEM/EDS. Composition of combustion-synthesized copper selenides was found to depend on x. In case of x = 0.0 and 0.15, combustion products were found to contain largely monoclinic α-Cu_2 – хSe (C2/c) modification while at x = 0.3, the cubic β-Cu_2 – хSe (Fm-3m) one.

Keywords: SHS, thermoelectric materials, copper selenides

DOI: 10.3103/S1061386221030043