| 摘要 |
PURPOSE:To reduce the power loss in a used high frequency region by specifying the percentage of the contained weight of CaCO3, SiO2, V2O5 or K2CO3 respectively. CONSTITUTION:0.01-0.1 wt % CaCO3, 0.02-0.02 wt % SiO2, 0.02-0.15 wt % V2O5 and 0.02-0.15 wt % K2CO3 are contained in an Mn-Zn ferrite which has main components of Fe2O3, MnO and ZnO for a magnetic core material used in a switching power source transformer, etc. If the contents of CaCO3, SiO2 and V2O5 are less than definite quantity, sintering is not good and a specific resistance is also made smaller. On the contrary, if the contents of CaCO3, SiO2 and V2O5 are more than the definite quantity, crystal grows too much and desired characteristics cannot be obtained. If the Content of K2CO3 is also less than the definite Quantity, the crystal grows too much and the desired Characteristics cannot be obtained. On the contrary, if it is more than the definite quantity, sintering is not good and the specific resistance is also made smaller. |
