首先采用固相反应法分别合成了Mg2TiO4和CaTiO3粉体,然后在其混合物(质量比0.95:0.05)加入质量分数为1.5%的CuO作为烧结助剂进行微波烧结;用排水法、阻抗分析、XRD、SEM等方法对烧结体的密度、电容及介电损耗、晶相组成、微观形貌进行了分析.结果表明:微波烧结明显缩短了烧结周期,并且烧结体的烧结性能和介电性能良好,在1 310℃保温45 min获得烧结体的介电性能优异,在10 kHz下介电常数为19.19,介电损耗为0.002 2;烧结体主晶相为MgzTiO4,次晶相为CaTiO3,同时含有少量的MgTiO3,微波烧结材料中的次晶相发育不完整.
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