Method of refining magnetic domains of electrical steels...

Details Method of refining magnetic domains of electrical steels... Method of refining magnetic domains of electrical steels...

C - Chemistry, Metallurgy

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C

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C23C 8/04 (2006.01) C21D 3/02 (2006.01) C21D 8/12 (2006.01) C21D 9/46 (2006.01) C23C 26/00 (2006.01) H01F 1/04 (2006.01)

Patent

CA 1314462

RL-1443-B ABSTRACT OF THE DISCLOSURE A method is provided for refining the magnetic domain wall spacing of grain-oriented silicon steel having a forsterite base coating thereon by removing portions of the base coating to expose a pattern of the underlying silicon steel, providing the exposed silicon steel with an environment selected from the group of phosphorus and phosphorus-bearing compounds, and then annealing the exposed steel, which is free of thermal and plastic stresses, in the phosphorus environment in a reducing atmosphere to produce in the steel a line of permanent bodies containing a phosphorus-bearing compound to effect heat resistant domain refinement and reduced core loss. A semi-finished sheet product of final texture annealed grain-oriented silicon steel is also provided.

602205

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