按照氧化物陶瓷工艺对高频MnZn功率铁氧体烧结工艺条件进行了研究.烧结温度越高,晶粒越大,晶界越薄,电阻率越低,磁芯损耗越大,起始磁导率和烧结密度分别在1240℃和1230℃达到最大值.延长保温时间,可以使晶粒充分生长,晶界变薄,电阻率减小,损耗增大.保温3 h后,起始磁导率和烧结密度均可达到最大值.氧分压越低,材料起始磁导率越高,电阻率越小,损耗越大,但氧分压低于5%后烧结密度不再继续增加.
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