| 摘要 |
A nano-crystalline soft magnetic alloy ribbon having a structure being occupied by nano-crystalline particles having an average particle size of 50 nm or less at least 50% of the alloy structure. A ceramic insulation coating is formed on its surface so that the coating becomes thicker at the both ends of the ribbon than at the center in the transverse direction of the ribbon and the thickness dx at the coating ends and the average thickness da of the coating determined by a mass measurement method are in the relations of 1.2da </= dx </= 5da and dx </= 10 mu m. With a magnetic core using such a nano-crystalline soft magnetic alloy ribbon, magnetic components including saturable reactor, transformer, saturable transformer, acceleration cavity and surge absorbing elements such as surge block core in neutral beam injector can realize a higher performance. The invention also results in a higher reliability for the devices using such magnetic components. |
