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Influence of Crystal Orientation on Magnetic Properties in 3% Silicon Steel With Ultra-High Tension TiN Coating

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2 Author(s)
Shingaki, Y. ; JFE Steel Corp., Kurashiki, Japan ; Okabe, S.

The influence of the tile angle of the [001] out of crystal surface β on iron loss improvement of 3% Si steel single crystals was investigated. This iron loss improvement was caused by tensile stress effect of TiN coating and domain refinement. When β angle was less than 3 degrees, both eddy current loss and hysteresis loss decrease. Extremely low iron loss was obtained, when β angle equal to about 2 degrees. On the other hand, when β angle is more than 3 degrees, the hysteresis loss increased though the eddy current loss decreased by TiN coating. As a result, change in iron loss was small after TiN coating and domain refining. Therefore, it was clarified that the iron loss improving methods, such as domain refining and ultra-high tension coating, were effective especially in grain oriented electrical steel whose β angle is less than 3 degrees.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 4 )