Patent ID: 7182930

Claim:
A method of fabricating barium titanate powders made from titanium tetrachloride and barium hydroxide as raw materials, comprising: (a) providing a titanium tetrachloride solution; (b) adding excess ammonium aqueous solution into the titanium tetrachloride solution; (c) adding a barium hydroxide aqueous solution into the titanium tetrachloride solution; (d) adding a potassium hydroxide into the titanium tetrachloride solution to adjust the pH value of the titanium tetrachloride solution into a strongly alkaline range; (e) heating the titanium tetrachloride solution to a reaction temperature at normal pressure in a nitrogen-containing environment, and performing a stable hydro-thermal reflux reaction for the titanium tetrachloride solution; and (f) after the hydro-thermal reflux reaction is completed, a product thereof is treated by an ion exchange resin until the product is substantially neutral, and then is dried to obtain barium titanate powders.