Relationships between Magnetic Properties and Si-contents/Sintering Conditions of Fe-Si type Magnetic Alloys.

Kusaka, Katsushi; Imaoka, Takeshi; Kondo, Tetsuya

doi:10.2497/jjspm.47.195

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…Silicon steel sheets with high silicon content have a wide application range in high-frequency motors, audio and high-frequency transformers, magnetic shielding and other magnetic equipment [1]. In general, with the increase of silicon content in silicon steel sheet, the resistivity and magnetic permeability increase, while the coercivity and magnetostriction coefficient reduce, and the eddy current loss and hysteresis loss decrease [1][2][3]. When the silicon content increases to 6.5 wt-%, the magnetostriction approaches zero, the iron loss (especially at high frequency) is greatly reduced, and the magnetic permeability reaches the maximum value [4,5].…”

Section: Introductionmentioning

confidence: 99%

Performance improvement and microstructure evolution of powder metallurgy high silicon steel with phosphorus addition

et al. 2022

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In this study, phosphorus-containing Fe-5 wt.% Si silicon steel sheet was prepared by powder loose sintering followed by hot rolling. Defect-free sheet with high P content was achieved. The study found that P effects on sintering promotion and processing deterioration were significantly suppressed by the presence of Si in steel. Appropriate P content would significantly improve the mechanical and magnetic properties of the sample. Under a comprehensive consideration, P content of 0.3-0.5 wt.% was suitable for silicon steel. Compared with P-free silicon steel, with 0.3 wt.% P addition, the tensile strength of silicon steel increased from 521 MPa to 680 MPa. As to the magnetic performance, the sample with 0.5 wt.% P had B8 of 1370.5 mT, and W10/50 0f 1.16 W·kg −1 , while those for P-free sample were 1332.3 mT, and 1.46 W·kg −1 , respectively. FeP phase with special morphology would be precipitated in samples with P addition.

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Section: Introductionmentioning

confidence: 99%

Performance improvement and microstructure evolution of powder metallurgy high silicon steel with phosphorus addition

et al. 2022

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“…To date, several methods have been developed at home and abroad to prepare Fe-6.5 wt-% Si high-silicon steel strip, including traditional rolling process [6,7], warm rolling process [8,9], thin strip casting process [10,11], rapid solidification process [12][13][14], CVD process [15][16][17], and powder rolling process [18][19][20], etc. To a certain extent, although these above methods can avoid or solve the difficulty in the deformation of this alloy, they are still at the experimental stage [21].…”

Section: Introductionmentioning

confidence: 99%

Magnetic performance and microstructure characterisation of powder metallurgy Fe–6.5 wt-% Si high-silicon steel

Qin

Yang

et al. 2021

Powder Metallurgy

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Powder metallurgy high-silicon steel strip (Fe-6.5 wt-% Si) was prepared by directly sintering followed by rolling using gas atomised powder with low oxygen content. Due to its poor formability, the gas atomised powder was directly sintered with something heavy of 1 kg overlaid on powder top. The relative density of sintered samples was about 94.1% and the porosity was 5.9%. The pore pinning effect prevented the formation of extremely large grains during sintering, which was beneficial for subsequent rolling. The grain size was controlled in the range of 100-300 μm. After cold rolling, a large number of sub-grain boundaries and deformation bands were generated, which increased the strength to 1190 MPa. It was worth noting that these two would disappear after annealing. Instead, ordered B2 and D0 3 phases were formed, and the texture of high-silicon steel was mainly {100}<110>. A low iron loss W10/50 value of 0.55 W kg −1 was achieved.

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“…Thus, high silicon Fe-Si components produced by powder metallurgy for electric power and telecommunication attracted great interest for research. [2][3][4] During the application of components for electric power and telecommunication, Fe-Si alloys are usually subject to corrosion. 5 Surface qualities of magnetic powders are crucial to the magnetic properties and the performance of powder metallurgy parts, which are also affected by surface corrosion of powders.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, more important is that powder metallurgy can avoid the brittleness problem of high silicon Fe–Si alloy. Thus, high silicon Fe–Si components produced by powder metallurgy for electric power and telecommunication attracted great interest for research 2 – 4…”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of Fe–6·5 wt-%Si atomised powders

Guo

Zhang

et al. 2013

Corrosion Engineering, Science and Technology

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This paper reports our investigation on the corrosion resistance and corrosion behaviour of Fe-6?5 wt-%Si atomised powders. Results showed that corrosion resistance was strongly related to powder sizes. When powder sizes were ,38 mm, they showed excellent corrosion resistance compared with the larger ones. Analysis suggested that most of the corrosion started from corrosion pits when the powder sizes were .53 mm. Weaker corrosion resistance can be explained by severe Si content heterogeneity and more grain boundaries in the larger sizes atomised powders.

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Relationships between Magnetic Properties and Si-contents/Sintering Conditions of Fe-Si type Magnetic Alloys.

Cited by 6 publications

References 5 publications

Performance improvement and microstructure evolution of powder metallurgy high silicon steel with phosphorus addition

Performance improvement and microstructure evolution of powder metallurgy high silicon steel with phosphorus addition

Magnetic performance and microstructure characterisation of powder metallurgy Fe–6.5 wt-% Si high-silicon steel

Corrosion behaviour of Fe–6·5 wt-%Si atomised powders

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