211 results about "Sodium niobate" patented technology

The invention discloses a method for preparing sodium niobate powder. The method comprises: taking Nb2O5 and NaOH as raw materials and KOH as mineralizer or taking Nb2O5 as raw materials and NaOH as mineralizer; weighing 20 to 40 percent of NaOH ,55 to 75 percent of deionized water ,1 to 3 percent of Nb2O5 and 2 to 4 percent of KOH by weight when Nb2O5 and NaOH are taken as the raw materials and KOH is taken as the mineralizer; weighing 20 to 40 percent of NaOH ,55 to 75 percent of distilled water and 1 to 3 percent of Nb2O5 by weight when Nb2O5 is taken as the raw materials and NaOH is taken as the mineralizer; adding the weighed raw materials to a beaker respectively; stirring with a glass rod to completely dissolve the raw materials; and obtaining the sodium niobate powder through heating, cooling, cleaning and drying processes. The powder prepared by the method for preparing sodium niobate powder is pure orthorhombic sodium niobate powder. Moreover, as the method adopts a microwave internal heating mode, the method has the advantages of heating more uniformly, raising heating rate and greatly shortening reaction time, along with simple process control, strong repeatability, short process cycle and energy conservation.