Reduction of core loss in non-oriented (NO) electrical steel by electroless-plated magnetic coating

Chivavibul, Pornthep; Enoki, Manabu; Konda, Shigeru; Inada, Yasushi; Tomizawa, Tamotsu; Toda, Akiko

doi:10.1016/j.jmmm.2010.09.024

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…It is possible to reduce core loss of electrical steel by applying electroless Ni-Co-P coating. A core loss reduction was obtained with the Ni-Co-P of 1 µm thickness magnetized at 0.3 T (magnetic flux density) [82] . The new progress in polyalloy with composite coating will be reviewed in Section 5.…”

Section: Polyalloysmentioning

confidence: 99%

Electroless nickel, alloy, composite and nano coatings – A critical review

Sudagar¹,

Lian²,

Sha³

2013

Journal of Alloys and Compounds

782

367

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The development of metal deposition processes based on electroless nickel, alloy and composite coatings on various surfaces has witnessed a surge in interest among researchers, with many recent applications made possible from many excellent properties. In recent years, these coatings have shown promising corrosion and wear resistance properties and large number of newer developments became most important from macro to nano level 1 applications. After a brief review of the fundamental aspects underlying the coating processes, this paper discusses in detail about different electroless nickel alloy, composite, nano plating, bath techniques, preparation, characterization, new depositing mechanism and their recent applications, including brief notes on difficult substrate and waste treatment for green environment. Emphasis will be on to their recent progress, which will be discussed in detail and critically reviewed.

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Section: Polyalloysmentioning

confidence: 99%

Electroless nickel, alloy, composite and nano coatings – A critical review

Sudagar¹,

Lian²,

Sha³

2013

Journal of Alloys and Compounds

782

367

View full text Add to dashboard Cite

show abstract

“…The stator and rotor in a motor are made of hundreds of laminated and joined thin electrical steel sheets [ 25 ], which could reduce the eddy current loss and improve efficiency. There are insulation coatings on both sides of the electrical steel sheet to cut off the interlaminar eddy current when hundreds of electrical steels are laminated in the motor application [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Generally, the goal of joining the laminated electrical steels is to ensure the mechanical strength of the laminations [ 37 ], while the joining process will lead to the degradation of the magnetic properties due to the damage of the insulation coating [ 38 ], the modification of the microstructure [ 39 , 40 ], the introduction of the residual stress [ 41 ], and so on.…”

Section: Introductionmentioning

confidence: 99%

Joining of the Laminated Electrical Steels in Motor Manufacturing: A Review

Xia

Wang

et al. 2020

Materials

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In recent years, the motor has been increasingly used to replace the conventional gasoline engine for carbon emission reduction, and the high-performance motor is urgently required. The stator and rotor in a motor are made of hundreds of joined and laminated electrical steels. This paper covers the current research in joining the laminated electrical steels for the motor application, together with the critical assessment of our understanding. It includes the representative joining method, modeling of the joining process, microstructure of the weld zone, mechanical strength and magnetic properties. The gaps in the scientific understanding, and the research needs for the expansion of joining laminated electrical steels, are provided.

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“…The electroless deposition rates are very fast as compared to other chemical coating techniques and being autocatalytic no external current is supplied for the process to take place. Chivavibul et al [14] produced an electroless Ni-Co-P coating of 1 micron thickness on non-oriented electrical steel and found that the coating was effective in reducing losses by up to 4% at a magnetic flux density of 0.3 T and frequency of 400Hz. The coating was able to minimize the eddy current loss at higher frequencies to reduce the overall loss.…”

Section: Introductionmentioning

confidence: 99%

Application of Co–Ni–P Coating on Grain-Oriented Electrical Steel

et al. 2016

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An electroless plating of Co-Ni-P was applied to a grain-oriented electrical steel substrate resulting in a power loss improvement of approximately 9-11 %. The mean thickness of the coating was found to be 2.15±0.15 µm from Environmental Scanning Electron Microscope (ESEM) images. Shifts of the magnetostriction stress sensitivity curves showed that stress was acting on the substrate corroborated by a shift in X-ray Diffraction (XRD) peaks and narrowing of the domains after the samples were coated. The magnetic property measurement system (MPMS) results confirmed the magnetic nature of the coating and XRD results showed peaks of α-Iron in uncoated sample, α-Iron-Cobalt and α-Iron in Co-Ni-P coated sample. The Talysurf profilometer showed a decrease in surface roughness (Ra) values after coating the sample which reduced the hysteresis loss.

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Reduction of core loss in non-oriented (NO) electrical steel by electroless-plated magnetic coating

Cited by 8 publications

References 18 publications

Electroless nickel, alloy, composite and nano coatings – A critical review

Electroless nickel, alloy, composite and nano coatings – A critical review

Joining of the Laminated Electrical Steels in Motor Manufacturing: A Review

Application of Co–Ni–P Coating on Grain-Oriented Electrical Steel

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