METHOD FOR OBTAINING THE MAGNESIUM-YTTRIUM LIGATURE Russian patent published in 2018 - IPC C22C23/06 C22C35/00 

FIELD: metallurgy.

SUBSTANCE: invention refers to the field of metallurgy, in particular to the production of magnesium ligatures with yttrium, which can be used as alloying and modifying additives during the production of alloys based on magnesium and aluminum. Method includes the preparation of salts of the composition, wt%: yttrium fluoride 50–60, potassium chloride 25–35, sodium chloride 20–25, calcium fluoride 1–5. Melting of the salts is carried out in the sealed retort in the argon atmosphere, accompanied by stirring of the melt at continuous feeding of the first portion of magnesium, the complete exchange reaction of the molten salts and magnesium is carried out at the temperature from 700 up to 720 °C, the pressure from 0.10 up to 0.15 atm and the holding time from 30 up to 45 minutes, and the introduction of the second portion of magnesium is carried out in the amount, which provides for the yttrium content from 20 up to 30 % in the resulting ligature.

EFFECT: invention allows to create the conditions for obtaining magnesium-yttrium master alloy ingots with the fine-grained structure in case of decreasing losses of magnesium and yttrium, at the same time, the quality of the ligature is increased due to the decreased content of oxygen and hydrogen impurities in it.

1 cl, 1 tbl, 8 ex