ELECTROLYTIC METHOD OF OBTAINING NANOSIZED POWDER OF NEODYMIUM HEXOBORIDE

摘要

FIELD: chemistry. ^ SUBSTANCE: invention can be used in chemical engineering. A glass-carbon crucible is filled with a salt mixture containing 3.0-5.0 wt % anhydrous neodymium chloride, 7.0-11.00 wt % potassium fluoroborate, the rest - equimolar mixture of potassium chloride and sodium chloride. The crucible with the salt mixture is put into a quartz cell and held in an atmosphere of clean and dry argon until the salt mixture melts. Upon achieving working temperature, a tungsten cathode is lowered into the molten mass and electrolysis carried out at current density ranging from -0.1 to -1.0 A/cm2, electrolysis potential relative a glass-carbon comparison electrode ranging from -2.5 to -4.0 V at 700-800C. Neodymium hexaboride powder is obtained at the cathode and has particle size of 40-180 nm. ^ EFFECT: invention lowers the process temperature to 700C, reduces electric power consumption and enables to obtain the end product in pure form. ^ 4 ex