The effect of manganese and sulfur contents on the magnetic properties of cold rolled lamination steels

Liao, K.-C.

doi:10.1007/bf02650106

Cited by 18 publications

(6 citation statements)

References 3 publications

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“…2,3 Extensive investigations have been conducted for getting more and finer precipitates of MnS and AlN. It has been proved that the content of sulphur (S) and acid soluble aluminium (Al s ) in the steels has a great effect on the precipitation behaviours of MnS in hot rolled bands and AlN in normalising annealed bands respectively, [20][21][22] and the nitriding during primary or secondary recrystallisation is also well known to be a key technology for obtaining large amount of fine AlN in the later process of producing electrical steels. 23,24 However, researches about the combined impact of S and Al s content on the behaviours of inhibitors in hot rolled band with lower slab reheating temperature are rather limited.…”

Section: Introductionmentioning

confidence: 99%

Effect of sulphur and acid soluble aluminium content on grain oriented silicon steel

Zhou

Zhu

et al. 2015

Materials Science and Technology

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The effect of sulphur (S) and acid soluble aluminium (Als) content on precipitation behaviours, microstructures and textures of hot rolled grain oriented silicon steels were investigated. The results showed that precipitates were mainly MnS and a little amount of MnS–AlN composite. Similar characteristics of precipitates, microstructures and textures were found in specimens containing similarly higher S content and different Als content. More fine precipitates, less recrystallisation and more and stronger Goss texture component were presented in specimen containing lower S content. It was not Als content but S content that played a key role during hot rolling. High proportion and intensity of Goss texture component were due to the effective inhibiting effect of finely and uniformly dispersed precipitates on dynamic recrystallisation.

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Section: Introductionmentioning

confidence: 99%

Effect of sulphur and acid soluble aluminium content on grain oriented silicon steel

Zhou

Zhu

et al. 2015

Materials Science and Technology

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“…In S-free steel materials, Mn additives ranging from 0.25% to 0.64% by weight result in linearly reduced losses (approximately 2.40 W/Mn wt%) and increased permeability and grain development. Studies have shown that electrical steels with 0.3% to 1.25% wt% Mn in Si-free steels exhibit improved magnetic properties, but higher Mn content leads to smaller grains, which, in turn, led to a deterioration in magnetic losses [86]. In ultra-low S grades with 0.5% wt% Si, the precipitation of MnSiN 2 occurs, causing a decrease in grain size and an increase in {222} tissue components up to 0.94 wt% Mn [87].…”

Section: Effect Of Manganesementioning

confidence: 99%

Advancements in Electrical Steels: A Comprehensive Review of Microstructure, Loss Analysis, Magnetic Properties, Alloying Elements, and the Influence of Coatings

Elgamli,

Anayi

2023

Applied Sciences

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Electrical steels play a crucial role in modern electrical devices and power systems due to their exceptional magnetic properties. This comprehensive review delves into the advancements in the field of electrical steels, focusing on key aspects such as microstructure, loss analysis, magnetic properties, alloying elements, and the influence of coatings. The microstructural characteristics of electrical steels are explored in relation to their impact on magnetic behaviour and overall performance. Loss analysis techniques are discussed, highlighting the importance of minimizing energy dissipation in applications. The intricate relationship between magnetic properties and material composition, including the role of alloying elements, is examined to elucidate the mechanisms governing magnetic behaviour. Furthermore, the influence of coatings on the performance of electrical steels is investigated, considering both protection against environmental factors and their impact on magnetic properties. Through a comprehensive synthesis of recent research, this review provides valuable insights into the multifaceted nature of electrical steels and sets the stage for further advancements in their design and application.

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“…However, if the Mn concentration exceeds the range, the grains become smaller and the magnetic losses increase (Rastogi, 1977). Also; it was found that when Mn concentrations are high, core loss drops significantly, and magnetic flux density rises modestly (Liao, 1986).…”

Section: Introductionmentioning

confidence: 96%

Impact of manganese diffusion into non-oriented electrical steel on power loss and permeability at different temperatures

2023

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Minimising power losses and their consequences is a significant matter in electrical steel applications. Increasing the resistivity of the steel strips has been confirmed as a successful method to overcome the problem of power losses. To increase the resistivity of the strip, different effective methods have been proposed and tested. In this work, a new material has been proposed to achieve the objective of increasing the resistivity of the steel samples by adding Manganese (IV) oxide based on a diffusion technique. The surface of the samples is to be coated with the proposed Manganese oxide. This should guarantee an increase in the resistivity of the samples, which in turn reduces the power losses caused by the eddy current. The samples tested were of non-oriented electrical steels containing 2.4 wt% Si-Fe (with a thickness of 0.305 mm*300 mm*30 mm). It was measured for losses and permeability before and after treatment by a Single Strip Tester (SST) at 0.5–1.7 T using an Alternating Current magnetic properties measurement system under controlled sinusoidal at different frequencies. The obtained results revealed that the depth of Manganese oxide diffusion is inversely proportional to the increase in the temperature. It was demonstrated that the best amount of diffusion of the element into the strips was achieved at 525°C, which was 60 weight % in comparison with 700°C which was 20 wt%. Likewise, at 800°C it was 7 wt%. However, the depth of diffusion of the manganese was the same at those tested temperatures, which were equal to 200 µm deep on each of the side strips. The diffusion of the material was investigated using Scanning Electron Microscope (SEM) coupled with Energy Dispersive X-ray Spectroscopy (EDS). Furthermore, from the results, it was concluded that the power losses in the coating samples were improved by 9% as compared with uncoated samples.

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The effect of manganese and sulfur contents on the magnetic properties of cold rolled lamination steels

Cited by 18 publications

References 3 publications

Effect of sulphur and acid soluble aluminium content on grain oriented silicon steel

Effect of sulphur and acid soluble aluminium content on grain oriented silicon steel

Advancements in Electrical Steels: A Comprehensive Review of Microstructure, Loss Analysis, Magnetic Properties, Alloying Elements, and the Influence of Coatings

Impact of manganese diffusion into non-oriented electrical steel on power loss and permeability at different temperatures

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