Abstract
In the preparation of magnetite sintered body which is the ferrite magnetic material, there are problems such as a high temperature at 1500°C, sintering under decompression or vacuum. Therefore, in this study, magnetite powder derived from the oxalic acid iron by the liquid phase sedimentation using iron chloride and ammonium oxalate was sythesized. Subsequently, a small amount of boric acid [H3BO3] was added to the powder, and magnetite powder compact was produced. Examination of the sintering condition by TMA and preparation of the sintered body under a CO2 atmosphere using horizontal electric furnace were carried out, and effect of additives on the characteristics of the sintered body was investigated in detail.
