Method of producing MnZn-base ferrite
    1.
    发明授权
    Method of producing MnZn-base ferrite 有权
    生产MnZn基铁素体的方法

    公开(公告)号:US07713465B2

    公开(公告)日:2010-05-11

    申请号:US12053082

    申请日:2008-03-21

    IPC分类号: C04B33/32

    摘要: Provided is a process for producing a MnZn-base ferrite comprising: firing a compacted raw material to produce the MnZn-base ferrite, wherein the firing comprises, in the following order: a heating phase comprising gradually bringing a firing temperature from room temperature up to a maximum temperature; a maximum temperature holding phase comprising maintaining the maximum temperature for a period of time, wherein a partial pressure of oxygen (p2) at the maximum temperature holding phase is greater than an equilibrium partial pressure of oxygen (p1) as follows: p2>p1, wherein the equilibrium partial pressure of oxygen (p1) is represented by the following equation: log(p1)=log(PO2)=a−b/T, wherein PO2 is measured in a unit of %, and T is measured in a unit of absolute temperature K; and a cooling phase comprising gradually bringing the maximum temperature down to near room temperature, wherein a partial pressure of oxygen (p3) at the cooling phase is operated at an equilibrium partial pressure of oxygen based on the equation log(p3)=a−b/T.

    摘要翻译: 提供了一种MnZn基铁素体的制造方法,其特征在于,包括:烧结压实的原料以制造所述MnZn基铁氧体,其中所述烧制按以下顺序包括:加热阶段,包括逐渐使焙烧温度从室温升至 最高温度; 最大温度保持阶段包括将最高温度保持一段时间,其中在最高温度保持阶段的氧分压(p2)大于氧的平衡分压(p1),如下:p2> p1, 其中氧的平衡分压(p1)由以下等式表示:log(p1)= log(PO2)= a-b / T,其中PO2以%为单位测量,T以单位测量 绝对温度K; 和冷却阶段,其包括使最高温度逐渐降至接近室温,其中在冷却阶段的氧(p3)分压基于等式log(p3)= a-b在氧的平衡分压下操作 / T。