| 摘要 |
Disclosed are compositions useful in fabricating blocks or inserts for inductors comprising: (a) about 98 percent to about 99.5 percent by weight of a high purity, annealed electrolytically prepared iron powder; and (b) about 0.5 percent to about 2 percent of an insulating polymer binder selected from the group consisting of epoxies, fluorocarbons, hot melt adhesives, and mixtures thereof; wherein said iron powder has a specific surface area of less than about 0.25 m<2>/g and a carbon content of less than about 0,01 percent; and wherein said composition after pressing at at least about 30 Tsi demonstrates a maximum of 5 percent regression in permeability and a total core loss of less than about 0.8 to about 1.2 ohms between 10 KHz and 500 KHz. Blocks and inserts made from such compositions, as well as methods of manufacturing such inserts, are also disclosed. |
