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CN102473517A 压粉磁芯及其制造方法 无效 - 驳回

压粉磁芯及其制造方法
摘要：
在800MPa以下的成形压力下将含有软磁性粉末和相对于该软磁性粉末为0.1质量％以上的绝缘性粉末润滑剂的粉末混合物成形为软磁性粉末的填充系数为93％以上的压粉体，可将该压粉体用作压粉磁芯。压粉磁芯的比电阻为10000μΩcm以上。使用硬脂酸钡或硬脂酸锂等的金属皂粉末作为绝缘性粉末润滑剂。
摘要（英）：

A powder mixture, which contains a soft magnetic powder and an insulating powder lubricant in an amount of 0.1% by mass or more relative to the soft magnetic powder, is compaction molded at a molding pressure of 800 MPa or less, thereby obtaining a powder compact that has a space factor of the soft magnetic powder of 93% or more. The powder compact can be used as a dust core. The dust core has a specific resistance of 10,000 [mu]Ocm or more. A powder of a metal soap such as barium stearate or lithium stearate is used as the insulating powder lubricant.

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