J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (12): 2492-2497.DOI: 10.1016/j.jmst.2018.06.004
• Orginal Article • Previous Articles Next Articles
Minghu Peng, Yunbo Zhong*(), Tianxiang Zheng, Lijun Fan, Junfeng Zhou, Weili Ren, Zhongming Ren
Received:
2017-08-08
Revised:
2017-10-23
Accepted:
2017-12-14
Online:
2018-12-20
Published:
2018-11-15
Contact:
Zhong Yunbo
Minghu Peng, Yunbo Zhong, Tianxiang Zheng, Lijun Fan, Junfeng Zhou, Weili Ren, Zhongming Ren. 6.5 wt% Si high silicon steel sheets prepared by composite electrodeposition in magnetic field[J]. J. Mater. Sci. Technol., 2018, 34(12): 2492-2497.
Composition | Content |
---|---|
FeSO4﹒7H2O, g/L K2SO4, g/L Oxalic acid, g/L MnSO4, g/L Pure silicon particles, g/L dispersing agent, g/L Iron powder CED conditions Temperature, ℃ pH Plating current density, A/dm2 Electrodeposition time, min Magnetic flux density, T | 200-400 50-120 3 3 11 1.2 a small amount room temperature 2.5-3.0 2 20-120 0-1.2 |
Table 1 Compositions of the Fe-nano-silicon particles bath solution and CED conditions.
Composition | Content |
---|---|
FeSO4﹒7H2O, g/L K2SO4, g/L Oxalic acid, g/L MnSO4, g/L Pure silicon particles, g/L dispersing agent, g/L Iron powder CED conditions Temperature, ℃ pH Plating current density, A/dm2 Electrodeposition time, min Magnetic flux density, T | 200-400 50-120 3 3 11 1.2 a small amount room temperature 2.5-3.0 2 20-120 0-1.2 |
Composition | Content |
---|---|
FeSO4﹒7H2O, g/L FeCl2﹒4H2O, g/L NH4﹒Cl, g/L Concentration particle, g/L HTAB, g/L CED conditions Temperature, ℃ pH Plating current density, A/dm2 Electrodeposition time, min Magnetic flux density, T | 200-300c 20-40 25 40-140 0.2 room temperature 1.5-1.7 1-4 20-120 0-1.2 |
Table 2 Composition of the Fe-FeSi alloy bath solution and CED conditions.
Composition | Content |
---|---|
FeSO4﹒7H2O, g/L FeCl2﹒4H2O, g/L NH4﹒Cl, g/L Concentration particle, g/L HTAB, g/L CED conditions Temperature, ℃ pH Plating current density, A/dm2 Electrodeposition time, min Magnetic flux density, T | 200-300c 20-40 25 40-140 0.2 room temperature 1.5-1.7 1-4 20-120 0-1.2 |
Fig. 4. Surface distribution of elements of Fe and Si on composite coatings surface under parallel magnetic fields (green means element of silicon and red means element of iron: (a) 0?T; (b) 0.4?T; (c) 1.2?T.
Fig. 8. (a) SEM morphologies of cross-sections of Fe-Si coatings after annealing at 1200 ℃ for 12?h; (b) Si content of the yellow arrow line by SEM-EDS.
Fig. 9. (a) Iron loss curve of annealed 6.5?wt% Si Hi-Si steel and 3?wt% Si steel; (b) Iron loss curve of annealed 6.5?wt% Si Hi-Si steel under different MFD.
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