pH值对Ti（O^nBu）_4－Ba（OAc）_2水解法合成BaTiO_3粉体

EFFECT OF pH VALUE ON THE PROPERTIES OF BaTiO_3 POWDER SYNTHESIZED BY HYDROLYSIS OF Ti(OBUu)_4-Ba(OA_c)

以乙酸和氢氧化钾为辅助原料，通过Ｔｉ（Ｏ￣ｎＢｕ）＿４－Ｂａ（ＯＡｃ）＿２水解法合成ＢａＴｉＯ＿３粉体。借助ＳＥＭ、ＴＥＭ、ＸＲＤ和ＥＰＭＡ等分析手段，研究了ｐＨ值对ＢａＴｉＯ＿３粉体性能的影响。论述了合成ＢａＴｉＯ＿３的反应机理，同时探讨了ｐＨ值对其反应机理的影响。

BaTiO_3 powder is synthesized by hydrolysis of Ti(rBu)_4-Ba (OAc)_2 by use of acetic acid andpotassium hydroxide as auxiliary materials. Effect of pH value on the properties of BaTIO_3 powder is studied bymeans of SEM,TEM,XRD and EPMA,The mechanism of forming BaTiO_3 is discussed,and the effect of pHvalue on it is investigated。