| 摘要 |
PURPOSE:To reduce core loss in the high frequency band of Mn-Zn ferrite as trans core material. CONSTITUTION:The ingredients of Mn-Zn ferrite are as follows; 34.5<=MnO<=38.5(mol%), 8.5<=ZnO<=12.0(mol%) 52.0<=Fe2O3<=55.5(mol%). The manufacturing process is composed of a first firing process (1130-1280 deg.C) and a second firing process (1030-1120 deg.C) and the atmosphere for the second firing process is permitted to be nitrogen gas which contains oxygen of 0.01-0.5vol.%. |
