Effect of Ball Scribing on Magnetic Barkhausen Noise of Grain-oriented Electrical Steel

doi:10.1016/j.jmst.2013.03.018

J. Mater. Sci. Technol. ›› 2013, Vol. 29 ›› Issue (7): 673-677.DOI: 10.1016/j.jmst.2013.03.018

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Effect of Ball Scribing on Magnetic Barkhausen Noise of Grain-oriented Electrical Steel

Hao Wang^1,2), Changsheng Li¹⁾, Tao Zhu¹⁾, Ban Cai¹⁾, Gang Huo^1,3), Nasir Mohamed²⁾

1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
2) Wolfson Centre for Magnetics, Cardiff University, Cardiff CF24 3AA, UK
3) Benxi Steel Posco Cold Strip Rolling Co. Ltd, Benxi 117021, China

Received:2012-11-20 Revised:2013-01-23 Online:2013-07-30 Published:2013-06-08
Contact: Changsheng Li
Supported by:
National Natural Science Foundation of China (Nos. 51174057 and 51274062) and the National High Technology Research and Development Program (No. 2012AA03A503)

Abstract

Abstract:

Effect of ball scribing on magnetic Barkhausen noise (MBN) of conventional grain-oriented (CGO) and high-permeability grain-oriented (HGO) electrical steel was investigated. The results showed that after ball scribing, root mean square of MBN (MBNrms) of CGO electrical steel increased 9.8% with 4 mm scribing spacing at 1.2 T, and that of HGO electrical steel apparently decreased 17.3% with 16 mm scribing spacing at 1.2 T. Through the formation and development of free magnetic poles and secondary magnetic domains due to compressive stress, primary magnetic domain space of grain-oriented electrical steel becomes smaller, which reflects as a variation of MBN in the macroscopic magnetic properties. Through correlation formula derivation of MBNrms and equilibrium distance between domain walls, effect of domain refinement on grain-oriented electrical steel was also interpreted, and optimum equilibrium distance between domain walls was determined.

Key words: Ball scribing, Grain-oriented electrical steel, Magnetic Barkhausen noise, Domain refinement

Hao Wang, Changsheng Li, Tao Zhu, Ban Cai, Gang Huo, Nasir Mohamed . Effect of Ball Scribing on Magnetic Barkhausen Noise of Grain-oriented Electrical Steel[J]. J. Mater. Sci. Technol., 2013, 29(7): 673-677.

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Effect of Ball Scribing on Magnetic Barkhausen Noise of Grain-oriented Electrical Steel

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