| 摘要 |
Disclosed is a method for the preparation of a ferrite beads composition suitable for compression-molding into a compression-molded ferrite body to be subjected to a sintering heat treatment to give a sintered ferrite member having usefulness as an electromagnetic material. The method comprises the steps of: forming ferrite beads from ferrite particles and an organic binder compound; and uniformly mixing the ferrite beads with a limited amount of a higher fatty acid ester of a hexitan compound such as sorbitan mono- or sesquioleate. The ferrite beads composition of the invention is advantageous not only in respect of the behavior in compression molding such as high density of the compression-molded body, low withdrawal pressure from the metal mold and a decrease in the phenomenon of springback but also in respect of the properties of the ferrite body after sintering.
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