The Investigation of Microstructure and the X-Ray Phase Analysis of Re-X Alloys (X = S, Se, Te)

Abstract

Influence of terms electrolysis and concentration of electrolysis components on the microstructure obtaining films of the chalcogenides rhenium has been studied. Appearance and structure electrolytical depositions of chalcogenides rhenium, obtaining by electrochemical method, depend from electrolysis conditions. In the process of studying of electrolysis conditions has determinated that for obtaining qualitative depositions of rhenium chalcogenides most suitable temperature is 75 ℃ - 80 ℃ . Microscopic studying of surface of catholic deposition of Re-Se showed that on the cathode had been obtained dense fine-crystalline black coverings. More qualitative depositions have been obtained for low current density. Increasing if current density adducts to gradual deterioration of structure cathode depositions. It has been determinated that specific influence on the process of deposition Re-S alloys has changing of electrolyte pH and current density. At low pH values, the colloidal sulfur formed in electrolyte has adsorbed on the cathode and bearing to the deposits quality. Microscopic studying of surface of cathode depositions Re-Te 2 showed that on the cathode at current density 2 mA/sm 2 had been obtained dense grey fine crystalline deposits of ReTe 2 .