Observation of the Segregation Behavior of Ca in the Sintering Process of MnZn Ferrite
Dissolution and segregation behavior of Ca in the sintering process of MnZn ferrite were investigated by microstructure analysis. It was revealed that, as the temperature rises to above 1000℃, Ca dissolves to the spinel lattice and disperses uniformly in the ferrite at the soaking step. Ca begins to segregate to the grain boundaries in the cooling process, and the segregation proceeds below 1100℃ rather than above. This suggests that control of the cooling in this temperature range is of great importance for the formation of high-resistivity grain boundaries and lowering the core loss.
MnZn ferrite grain boundary calcium segregation
S.L.Che M.Watanabe K.Mori N.Sato T.Aoki T.Murase
Materials & Process Development Center,TDK Co.,Ltd.,570-2 Matsugashita,Minamihatori,Narita City
国际会议
The 10th International Conference on Ferrites(2008中国国际铁氧体研讨会)
成都
英文
208-211
2008-10-10（万方平台首次上网日期，不代表论文的发表时间）