公开(公告)号：KR1020120042571A

公开(公告)日：2012-05-03

申请号：KR1020100104299

申请日：2010-10-25

Applicant: 삼성전기주식회사

Inventor： 박재성 ,  허강헌 ,  권상훈 ,  김태형 ,  김정렬 ,  윤석현 ,  정한승

IPC: C01G23/00 ,  C04B35/468

Abstract: PURPOSE: A manufacturing method of barium titanate powder for low temperature calcinations and a barium titanate powder manufactured by using the method are provided to enable low temperature calcinations of the barium titanate powder, thereby obtaining crystalline of the powder. CONSTITUTION: A manufacturing method of barium titanate powder for low temperature calcinations comprises next steps: preparing a first slurry by mixing barium carbonate(BaCO3) and titanium oxide(TiO2)(S1); preparing a second slurry by mixing ammonium bicarbonate(NH4HCO3) solution with the first slurry(S2); drying and incinerating the second slurry(S3); manufacturing barium titanate powder. In titanium oxide(TiO2) and barium carbonate(BaCO3) mixing step, a molar ratio(barium / titanium) of the titanium to barium is 0.997-1.000. An addition amount of the ammonium bicarbonate is 0.1-10 wt%. The specific surface area of the barium carbonate is 5-20m/g and a specific surface area of the titanium oxide is 5-20m/g.

Abstract translation: 目的：提供一种低温煅烧用钛酸钡粉末的制造方法和使用该方法制造的钛酸钡粉末，能够使钛酸钡粉末进行低温煅烧，从而得到粉末的结晶。 构成：用于低温煅烧的钛酸钡粉末的制造方法包括以下步骤：通过混合碳酸钡（BaCO 3）和氧化钛（TiO 2）（S1）制备第一浆料; 通过将碳酸氢铵（NH 4 HCO 3）溶液与第一浆料（S2）混合来制备第二浆料; 干燥并焚化第二浆料（S3）; 制造钛酸钡粉末。 在氧化钛（TiO 2）和碳酸钡（BaCO 3）混合步骤中，钛与钡的摩尔比（钡/钛）为0.997-1.000。 碳酸氢铵的添加量为0.1-10重量％。 碳酸钡的比表面积为5-20m 2 / g，氧化钛的比表面积为5-20m 2 / g。