Application Of Scandium Oxide in Electronic Materials

Application of scandium oxide in electronic materials
Pure Sc2O3 can be used as an activator for the oxidation cathode of the cathode electron gun of the color television picture tube, and the effect is better. Spray a layer of Ba, Sr and Ca oxide with a thickness of 2 mm on the upper end of the color tube cathode, and then disperse a layer of Sc1O2 with a thickness of 3.0 mm on it. In the oxide cathode, the reaction of Mg, Sr and Ba promotes the reduction of Ba. The released electrons are more active and emit large current electrons to make the phosphor glow. Compared with the cathode without Sc3O4 coating, the current density can be increased by 3 times. The TV picture is clearer and the cathode life is increased by two times. The amount of Sc21O0 used for each 3-inch development cathode is 1.<>mg. At present, this cathode has been used in some countries in the world, such as Japan, which can improve market competitiveness and promote TV sales.