Structure at Near-Surface of TiN-Coated Grain Oriented Silicon Steel Sheet Characterized by Ultra-Low Iron Loss

摘要

The mechanism responsible for ultra-low iron loss in TiN-coated silicon steel was clarified by electron micro- scope observation of the magnetic domain and the structure at the interface of the TiN film and single crystal of silicon steel, and by X-ray pole figure measurement. Marked domain refinement due to thin TiN film coating was accomplished, satisfying the coherency relationship of (111)_TiN//(011)_TiN/[100]_Si-steel between the TiN film and single crystal matrix, by applying a strong surface tension to the [100]_Si-steel direction (elastic strain along only one axis).