Detrimental effect of oxidation on magnetic properties of nonoriented electrical steel sheet

Günther, Klaus; Bölling, F.; Huneus, H.

doi:10.1063/1.342367

Cited by 14 publications

(5 citation statements)

References 4 publications

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“…It is only for dew points above +20 1C where a significant increase in loss is seen. The same conclusion can be drawn from results of Gu¨nther et al [6]. It appears that it is the formation of a subsurface oxide layer that causes the increase in the power loss.…”

Section: Article In Presssupporting

confidence: 81%

The influence of dew point during annealing on the power loss of electrical steel sheets

Broddefalk¹,

Jenkins²,

Silk³

et al. 2008

Journal of Magnetism and Magnetic Materials

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Section: Article In Presssupporting

confidence: 81%

The influence of dew point during annealing on the power loss of electrical steel sheets

Broddefalk¹,

Jenkins²,

Silk³

et al. 2008

Journal of Magnetism and Magnetic Materials

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“…Its production involves the following steps: Good NO electric-sheet qualities with low losses at high flux densities (B¼ 1.0 and 1.5 T) must meet stringent requirements for texture, grain size, purity and surface finish of the strip, along with the secondary condition that the silicon content be as high as possible. In particular this means [97], [98]:…”

Section: Non-oriented Electric Sheetmentioning

confidence: 99%

Magnetic Materials

Ervens¹,

Wilmesmeier²

2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Forms of Magnetism in Matter 2.1. Diamagnetism 2.2. Paramagnetism 2.3. Ferromagnetism 2.4. Ferrimagnetism and Antiferromagnetism 3. Magnetic Quantities and Their Measurement 3.1. General 3.2. Parameters of Hard Magnetic Materials 3.3. Parameters of Soft Magnetic Materials 4. Hard Magnetic Materials 4.1. Classical Hard Magnetic Materials 4.1.1. Aluminum ‐ Nickel ‐ Cobalt Materials 4.1.2. Chromium ‐ Iron ‐ Cobalt Materials 4.1.3. Other Metallic Hard Magnetic Materials 4.1.4. Hard Ferrites 4.2. Modern Hard Magnetic Materials 4.2.1. Rare Earth Metal ‐ Cobalt Magnets 4.2.2. Rare Earth Metal ‐ Iron ‐ Boron Magnets 5. Soft Magnetic Materials 5.1. Classical Soft Magnetic Materials 5.1.1. Iron ‐ Silicon Materials 5.1.1.1. Non‐Oriented Electric Sheet 5.1.1.2. Grain‐Oriented Electric Sheet 5.1.2. Nickel ‐ Iron Materials 5.1.2.1. High‐Nickel Alloys 5.1.2.2. Medium‐Nickel Alloys 5.1.2.3. Low‐Nickel Alloys 5.1.3. Iron ‐ Cobalt Alloys 5.1.4. Soft Ferrites 5.1.5. Special Soft Magnetic Materials 5.2. Modern Soft Magnetic Materials 5.2.1. Powder Composite Materials 5.2.2. Rapidly Quenched Materials 5.2.2.1. Amorphous Magnetic Materials 5.2.2.2. Nanocrystalline Magnetic Materials 6. Applications 6.1. Applications of Hard Magnetic Materials 6.2. Applications of Soft Magnetic Materials

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“…Otherwise, the deformed grains remained in silicon steel could reduce the magnetic properties of the product after cold rolling and decarburization annealing. 1) But the high carbon content in the products of silicon steel would interfere with magnetic domain movement, increase its core loss, and lead to magnetic aging. 2) The main purpose of decarburization annealing is to reduce the mass fraction of carbon in the products of silicon steel to below 30 ppm.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Surface Oxidation and Numerical Simulation of Oxidation Kinetics for Fe-3%Si Steel during Decarburization

2018

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During the decarburization annealing process, the oxidized layer formed on the Fe-3% Si steel surface may affect its subsequent nitriding and secondary recrystallization. The decarburization experiment is carried out in the N 2 + H 2 + H 2 O at an annealing temperature 835°C. The morphology evolution of the oxidized layer on the steel surface under different annealing times is studied, and the distribution trend of silicon and oxygen in the oxidized layer is analyzed. For the phenomenon of selective oxidation behavior of Fe-3% Si steel, its oxidation kinetic model is established by using mass conservation equations, which is modified by probabilistic statistical method according to the experimental results. The results show that the oxidized layer of Fe-3% Si steel is composed of silica and fayalite after decarburization annealing. The oxidized layer thickens with the increase of annealing time. This oxidation kinetics model is suitable for calculating the mass fraction distribution of silicon and oxygen in the oxidized layer, the thickness of oxidized layer, and the content of oxygen in the steel. The model is a very powerful tool in the simulation of Fe-3%Si steel during decarburization.

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Detrimental effect of oxidation on magnetic properties of nonoriented electrical steel sheet

Cited by 14 publications

References 4 publications

The influence of dew point during annealing on the power loss of electrical steel sheets

The influence of dew point during annealing on the power loss of electrical steel sheets

Magnetic Materials

Characterization of Surface Oxidation and Numerical Simulation of Oxidation Kinetics for Fe-3%Si Steel during Decarburization

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