YU Cheng-feng
,
LI Yu-guang
钢铁研究学报(英文版)
The ferrites of PC30 (Mn-Zn ferrites) were prepared by using a dry processing route. The effect of Mn-Zn ferrites doped with H3BO3 has been investigated on the basis of microstructure analysis. The results on the samples doped with H3BO3 which is less than 50ppm show that the doping does not have significant effect on Pc, μi, microstructure and density of Mn-Zn ferrites. With further increases in H3BO3 doping(>100ppm), the microstructure of Mn-Zn ferrites is at the critical state between fine grain and ”sandwich”,, the μi and density of Mn-Zn ferrites begin falling quickly, and the increased H3BO3 doping also results in deteriorated Pc properties. Thus controlling the B content in iron oxide is of utmost importance for the quality of Mn-Zn ferrites in producing process.
关键词:
iron oxide;Mn-Zn ferrites;Boron content;initial permeability
