Inclusions have a great infuence on the quality of FeSiB amorphous ribbon.The evolution behavior of inclusions was analyzed.The results show that the spherical and elliptical inclusions,consisting of Al2O3 and SiO2,ma...Inclusions have a great infuence on the quality of FeSiB amorphous ribbon.The evolution behavior of inclusions was analyzed.The results show that the spherical and elliptical inclusions,consisting of Al2O3 and SiO2,mainly come from industrial pure iron.Ellipsoidal inclusions of 20-30μm in pure iron were removed by foatation during the smelting process,and spherical inclusions of 1-3μm combined with deoxidized products in FeSiB melt form Al2O3·SiO2 and CaO·Al2O3·SiO2 inclusions.Some inclusions accumulated on the inner wall of the nozzle during the spraying process,and others fowed out of the nozzle and remained in FeSiB amorphous ribbon.By controlling the total oxygen content in industrial pure iron to 31×10^-6,clogging on the inner wall of the nozzle can be reduced and the free surface smoothness of the amorphous ribbon can be improved.展开更多
オhe effects of composition, annealing temperature and time, annealing heating rate on the Curie temperature of amorphous FeSiB and FeWSiB alloys were studied. The results indicate that the Curie temperature of these ...オhe effects of composition, annealing temperature and time, annealing heating rate on the Curie temperature of amorphous FeSiB and FeWSiB alloys were studied. The results indicate that the Curie temperature of these alloys increases with the increase of the metalloid content when it is <25 at%, then decreases with the further increase of the metalloid content. For amorphous FeSiB and FeWSiB alloys with the low metalloid content, the Curie temperature increases with the annealing temperature and the annealing time. However, for the amorphous FeWSiB alloys with the high metalloid content, the Curie temperature increases at low annealing temperature and with short annealing time, and decreases at high annealing temperature and with long annealing time. The heating rate in measuring Curie temperature also influences the Curie temperature of the alloys. The Curie temperature is higher at lower heating rates.展开更多
基金This work was financially supported by the National Natural Science Foundation of China(No.51774098).
文摘Inclusions have a great infuence on the quality of FeSiB amorphous ribbon.The evolution behavior of inclusions was analyzed.The results show that the spherical and elliptical inclusions,consisting of Al2O3 and SiO2,mainly come from industrial pure iron.Ellipsoidal inclusions of 20-30μm in pure iron were removed by foatation during the smelting process,and spherical inclusions of 1-3μm combined with deoxidized products in FeSiB melt form Al2O3·SiO2 and CaO·Al2O3·SiO2 inclusions.Some inclusions accumulated on the inner wall of the nozzle during the spraying process,and others fowed out of the nozzle and remained in FeSiB amorphous ribbon.By controlling the total oxygen content in industrial pure iron to 31×10^-6,clogging on the inner wall of the nozzle can be reduced and the free surface smoothness of the amorphous ribbon can be improved.
文摘オhe effects of composition, annealing temperature and time, annealing heating rate on the Curie temperature of amorphous FeSiB and FeWSiB alloys were studied. The results indicate that the Curie temperature of these alloys increases with the increase of the metalloid content when it is <25 at%, then decreases with the further increase of the metalloid content. For amorphous FeSiB and FeWSiB alloys with the low metalloid content, the Curie temperature increases with the annealing temperature and the annealing time. However, for the amorphous FeWSiB alloys with the high metalloid content, the Curie temperature increases at low annealing temperature and with short annealing time, and decreases at high annealing temperature and with long annealing time. The heating rate in measuring Curie temperature also influences the Curie temperature of the alloys. The Curie temperature is higher at lower heating rates.
