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Effects of Inhibitors Composition on Precipitation Behavior of Inclusions in Grain-oriented Silicon Steels and Their Magnetic Properties
Author(s): 
Pages: 24-28
Year: Issue:  5
Journal: Electrical Engineering Materials

Keyword:  grain-oriented silicon steelcompositionsinclusioninhibitormagnetic properties;
Abstract: The composition and morphology of inclusions in the finished grain-oriented silicon steels are analyzed by using FE-SEM and EDS, and the number density and size distribution of the inclusions are counted. The influence mechanism of Sn, Cu, Nb, and Cr on the magnetic properties of the steel is also discussed. Results show that the inclusions composition in the grain-oriented silicon steel samples containing Sn is mainly block Al-Ti-C-N-O, compounding with a few spherical Al-N-O and block Ti-C-N-O. A small amount of rod-like inclusions in the steel are found. The inclusions composition is mainly spherical Al2O3 with a small amount of Cu-Al-N-O-S in the grain-oriented silicon steel samples containing Cr. Rod-like inclusions and irregular shape inclusions are less. Compared with the samples containing Sn, the average grain size of the samples containing Cr is larger, but the amount is less. The magnetic flux density of the samples containing Cr is lower than that of samples containing Sn at 800 A/m and 2500 A/m, while the core loss is higher at P1.7/50 and its value is 1.171 W/kg.
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