TiO2-Fe2O3-FeO系人工砂鉄に関する研究
1959 年 75 巻 847 号 p. 34-39
詳細
1959 年 75 巻 847 号 p. 34-39
In connection with the utilization of titanium the problem of iron sands has become to have great importance. The purpose of this investigation is to enlighten the structure and magnetic properties of these iron sands by X-ray analysis, thermomagnetic measurements, microscope, and chemical analysis on synthesized samples in the Ti02-Fe2O3 FeO series.
The results obtained are as follows:
(1) Ti02-Fe2O3 series By X-ray analysis the presence of only one compound Fe2TiO5 was detected, which showed orthorhombic structure.
(2) FeO-TiO2 series This examination revealed the presence of different compounds FeTi2O5 and ulvospinel Fe2TiO4 besides ilmenite FeTiO3, and the FeTi2O5 showed orthorhombic structure analogous to Fe2TiO5.
(3) Fe304-Fe2TiO4 series It was ascertained that solid solution was complete between Fe304 and Fe2TiO4, and its saturation magnetization decreased with increasing the amount of Fe2TiO4 in Fe3O4.
(4) Fe2O3-FeTiO3 series Also in this system solid solution would be formed. The obtained strongly magnetic ilmenite showed homogeneous structure and its chemical composition corresponded to Fe2O3·2FeTiO3. It is interesting fact that the curie point showed about 100°.
(5) Fe2TiO5-FeTi2O5 series Formation of the same crystal structure suggests that solid solution is possible between these two compounds.
