CAJ | 학술논문

采用粉末冶金技术,以气流破碎Fe78Si9B13非晶粉末为原料制备非晶磁粉芯。利用差示扫描量热仪、X射线衍射仪和B-H分析仪测试样品的热力学参数、相组成和磁性能,研究绝缘剂添加量和退火温度对磁粉芯磁性能的影响。结果表明,增加绝缘剂添加量可以降低磁粉芯的涡流损耗,但绝缘剂过多会降低磁导率和品质因数;去应力退火处理能有效提高磁导率和品质因数,降低磁损耗,但退火温度过高会使非晶磁粉芯晶化,导致磁性能的下降,最佳退火温度为400℃。
채용분말야금기술,이기류파쇄Fe78Si9B13비정분말위원료제비비정자분심。이용차시소묘량열의、X사선연사의화B-H분석의측시양품적열역학삼수、상조성화자성능,연구절연제첨가량화퇴화온도대자분심자성능적영향。결과표명,증가절연제첨가량가이강저자분심적와류손모,단절연제과다회강저자도솔화품질인수;거응력퇴화처리능유효제고자도솔화품질인수,강저자손모,단퇴화온도과고회사비정자분심정화,도치자성능적하강,최가퇴화온도위400℃。
The amorphous magnetic powder cores were fabricated by the airflow crashed Fe78Si9B13amorphous powder using power metallurgical technology.Differential thermal analyzer,X-ray diffractometer,B-H analyzer were used to measure the thermodynamic parameters,internal microstructure and magnetic properties for samples.Effects of insulating compound content and annealing temperature on the performance of magnetic powder cores were investigated.The results indicate that: Eddy current loss can be reduced by increasing the insulating compound content,but excessive insulating compound can reduce the magnetic permeability and quality factor.The stress relief annealing could promote permeability and quality factor,reduce the magnetic loss.Over annealing temperature could deteriorate magnetic properties due to crystallization of amorphous power,and the optimum annealing temperature was 400℃.