LUFTBESTENDIG KRISTALLIN LITIUMNITRID, FORFARANDE FOR DESS FRAMSTELLNING OCH DESS ANVENDNING

摘要

Crystalline lithium nitride, stable in air, characterized by a sodium content of less than 5x10-2 weight-percent, a potassium content of less than 10-2 weight-percent, a magnesium content of less than 1x10-2 weight-percent, and a silicon and iron content of 10-2 to 10-3 weight-percent each; is obtained by heating lithium having a purity of at least 99.9% in a vessel made of tungsten, niobium, ruthenium or tantalum in a nitrogen atmosphere at a pressure of at least 250 mm Hg in the absence of oxygen and water at a temperature of from 300 DEG C. to the melting point of lithium nitride.