采用微波烧结法制备铁酸铋多铁陶瓷,研究了微波烧结时间对其显微结构、介电性和铁电性的影响.结果表明:在4 kW下烧结35～40 min制备出基本为纯相的铁酸铋陶瓷；随烧结时间增加,铁酸铋陶瓷结构越来越致密,晶粒尺寸有一定程度增大；在-10～90℃范围内,介质损耗随烧结时间增加而增大；随微波烧结时间增加,剩余极化强度增大,而矫顽场强先增加后减小,且铁电性具有明显的频率依赖性；铁酸铋陶瓷的漏电流随微波烧结时间增加而减小,这是结构致密化的结果.
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