本文研究了BiNbO4掺杂对钛酸钡陶瓷居里点移动及微观性能的影响.实验结果表明,随着BiNbO4掺杂量的增加,钛酸钡陶瓷的四方率单调下降,而居里点先降低后升高,居里点的变化与陶瓷的微观应力变化一致.BiNbO4掺杂在0%～2%范围内时,能有效抑制BaTiO3陶瓷晶粒的生长,有助于陶瓷烧结的致密化,但过分掺杂会使陶瓷晶粒间气孔率增加,并产生第二相.
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