通过改进的制备工艺提高FINEMET纳米晶磁粉芯的磁性能及其机理

发布时间：2018-05-18 06:51

本文选题：FINEMET + 磁粉芯　；参考：《材料导报》2017年16期

【摘要】：通过对比实验研究了改进的制备工艺下FINEMET纳米晶磁粉芯的磁性能,并探讨了其相应的物理机制。采用扫描电镜、透射电镜和X射线衍射仪检测磁粉的表面形貌、内部结构和晶格畸变,采用B-H分析仪检测磁粉芯的动态磁性能。结果表明,改进的制备工艺能够有效降低磁粉芯的损耗,提高磁导率和频率应用范围。延长非晶粉末的球磨时间能够降低磁粉芯的磁滞损耗和涡流损耗,最佳的球磨时间为8h。通过对比磁粉的晶格畸变,发现通过改进工艺制备的磁粉的晶格畸变相对较小,该工艺提高磁性能的原因在于磁粉残余内应力的有效释放。
[Abstract]:The magnetic properties of FINEMET nanocrystalline magnetic core under the improved preparation process were studied by contrast experiments, and the corresponding physical mechanism was discussed. The surface morphology, internal structure and lattice distortion of magnetic powder were examined by scanning electron microscope, transmission electron microscope and X-ray diffractometer, and the dynamic magnetic properties of magnetic powder core were measured by B-H analyzer. The results show that the improved preparation process can effectively reduce the loss of magnetic powder core and increase the magnetic permeability and frequency application range. Prolonging the milling time of amorphous powder can reduce the hysteresis loss and eddy current loss of magnetic powder core, and the best milling time is 8 h. By comparing the lattice distortion of the magnetic powder, it is found that the lattice distortion of the magnetic powder prepared by the improved technology is relatively small. The reason for the improvement of the magnetic properties by this process is the effective release of the residual internal stress of the magnetic powder.
【作者单位】：黑龙江八一农垦大学工程学院;东北大学材料各向异性与织构教育部重点实验室;安泰科技股份有限公司;
【基金】：黑龙江省自然科学基金(QC2014C058) 黑龙江省普通高等学校青年学术骨干支持计划(1252G042) 黑龙江八一农垦大学引进人才科研启动基金(2010)
【分类号】：TB383.1;TG132.27

【相似文献】