摘要
采用传统的陶瓷工艺制备了MnZn功率铁氧体,研究了预烧工艺对预烧料的磁化率和振实密度的影响,并在此基础上,探讨了预烧温度对烧结样品微观结构和磁性能的影响。结果表明,升温速度和保温时间对预烧料的磁化率和振实密度的影响都很小,预烧温度对其起决定性作用。当预烧温度从700℃提高至1 000℃时,预烧料的磁化率提高了近10倍,振实密度提高约20%。当预烧温度为900℃时,所得MnZn功率铁氧体具有良好的烧结微观结构和最低的功率损耗。
MnZn power ferrite was prepared using conventional ceramic technology. The effects of pre-sintering process on magnetisability and tap density of pre-sintering powder were studied. And on this basis, the influences of pre-sintering temperature on microstructure and magnetic properties of MnZn power ferrite were investigated. The results show that the heating rate and soaking time contribute little to magnetisability and tap density, the pre-sintering temperature plays a decisive role on the final properties. When pre-sintering temperature increases from 700℃ to 1000℃, the magnetisability of the pre-sintering powder increases nearly tenfold , and the tap density enhances by about 20%. It also shows that uniform microstrueture and low power loss are obtained in MnZn power ferrite with a pre-sintering temperature of 900 ℃.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2013年第4期28-31,共4页
Electronic Components And Materials
基金
广东省高新区发展引导专项资助项目(No.2012B010900069)
