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发明授权
CN101118797B 低损耗磁粉芯用复合粉末及其磁粉芯 失效 - 权利终止

低损耗磁粉芯用复合粉末及其磁粉芯
摘要：
本发明提供了一种磁粉芯用复合粉末、磁粉芯及它们的制备方法，复合粉末是由粉末A和粉末B均匀混合而成，其含量为：粉末A为50-96wt％，粉末B 4-50wt％，其中粉末A是选自铁粉、铁硅粉、铁硅铝粉、铁基纳米晶粉、铁基非晶粉、铁镍粉和铁镍钼粉中的一种，粉末B是与粉末A具有不同需求特性，且选自铁粉、铁硅粉、铁硅铝粉、铁基纳米晶粉、铁基非晶粉、铁镍粉和铁镍钼粉中的至少一种。其中，所述粉末B可以是具有高绝缘性能的铁基非晶软磁粉作为绝缘剂，这样可以降低磁粉芯损耗，弥补了传统绝缘剂造成的磁粉芯磁导率降低，利用其良好的软磁特性、改善磁粉芯频率特性。
摘要（英）：

The present invention provides a magnetic powder core, composite powder used for the magnetic powder core, and a production method for the both. The composite powder is blended and formed by powder A and powder B, the content of which comprises 50-96wt percent of the powder A and 4-50wt percent of the powder B; wherein, the powder A is one out of iron powder, Fe-Si powder, Fe-Si-Al powder, Fe-based nanometer crystal powder, Fe-base amorphous powder, Fe-Ni powder and Fe-Ni-Mo powder; the powder B has different demand characteristics compared with the powder A and is selected from at least one out of iron powder, Fe-Si powder, Fe-Si-Al powder, Fe-based nanometer crystal powder, Fe-based amorphous powder, Fe-Ni powder and Fe-Ni-Mo powder. The powder B can be Fe-based soft magnetic amorphous powder as the insulating agent, which can reduce the wastage of magnetic powder core and make up for the declining magnetic conductivity of magnetic powder core caused by the traditional insulating agent. The excellent of soft magnetic properties of the insulating agent is utilized to improve frequency features of the magnetic powder core.

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