Submicron LaB6 powders with high purity prepared in large scale by salt-assisted combustion synthesis

The superfine and high-purity powders of LaB6 were synthesized in large scale by salt-assisted combustion synthesis (CS) with different NaCl diluent contents. With the increase of NaCl content, the adiabatic combustion temperature of the reaction system linearly declined, the average particle size of leached products decreased, and the product purity enhanced obviously. When NaCl content is 40 wt%, the purity is more than 98 wt%, and the average particle size is 380 nm.84