CPC C23C 16/505 (2013.01) [C21D 9/46 (2013.01); C23C 16/40 (2013.01); C23C 16/405 (2013.01); C23C 16/452 (2013.01); C23C 16/453 (2013.01); C23C 16/56 (2013.01); C21D 8/1272 (2013.01)] | 9 Claims |
1. A method of manufacturing an oriented electrical steel sheet including processes of reheating a steel slab, hot-rolling the steel slab to obtain a steel sheet, hot-rolled sheet annealing, cold-rolling the steel sheet, the method further comprising:
primary recrystallization annealing the steel sheet;
forming a ceramic coating layer by allowing a gas-phase ceramic precursor to contact-react with a portion or an entire portion of one surface or both surfaces of the primary recrystallization annealed steel sheet in a plasma state using an atmospheric pressure plasma CVD process (APP-CVD); and
secondary recrystallization annealing the steel sheet on which the ceramic coating layer is formed.
|