ELECTROCHEMICAL METHOD FOR OBTAINING MICRODISPERSE POWDERS OF LANTHANIDE GROUP METAL HEXABORIDES DOPED WITH CALCIUM Russian patent published in 2022 - IPC C01B35/04 C01F17/30 C25B1/18 C25B1/32 C25B1/50 

FIELD: electrochemistry.

SUBSTANCE: invention relates to an electrochemical method for producing microdisperse powders of lanthanide group metal hexaborides doped with calcium. The method includes electrolysis of the CaCl₂ melt with additives of boron oxide B₂O₃, the oxide of the resulting lanthanide Ln₂O₃ and calcium oxide CaO at a total concentration of oxides B₂O₃, CaO, Ln₂O₃ in the melt 8-10 wt. %, of the mass of the electrolyte, the process is carried out in an air atmosphere in the temperature range of 820÷850°C at a cathode current density of 0.4-0.5 A/cm², during electrolysis, the concentrations of oxides B₂O₃, CaO, Ln₂O₃ are kept constant at a ratio of molar fractions of Ca/Ln of at least 1 and no more than 16.

EFFECT: method makes it possible to obtain complex hexaborides of lanthanide group metals doped with calcium.

1 cl, 3 dwg, 3 ex