采用传统固相反应法制备了Ba(Ti0.96Sn0.04)O3无铅压电陶瓷,对其压电性能、介电性能、铁电性能和微观结构等进行了研究.研究发现,原料以及制备工艺对Ba(Ti0.96Sn0.04)O3陶瓷的压电性质具有较大的影响.与BaTiO3陶瓷相比,Ba(Ti0.96Sn0.04)O3陶瓷的正交-四方相变温度To-T得到了一定的提高,并且To-T附近的热滞只有1.8℃.陶瓷的微观形貌呈现出较为复杂的畴结构,主要以90°平行带状畴为主,偶尔有少量不同构型的180°畴.电滞回线呈现为理想的近似矩形饱和形状的曲线,剩余极化强度Pr为18.9 μC/cm2,矫顽场Ec为2.5 kV/cm.此外,非180°畴的翻转是引起陶瓷逆压电常数d33*的主要因素,其值可达550 pm/V.
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