| 摘要 |
The method for mfg. a radio wave absorber is characterized by mixing 66.1 g Fe2O3, 23.1 g ZnO, 8.8 g NiO, 0.5 g MnO2, 0.5 g Co3O4 and 1.0 g CuO, (b) drying and crushing the mixture, (c) calcinating it at 900 deg.C for 2 hr, (d) crushing and moulding it, (e) heating it to the heating rate of 2-12 deg.C/min upto 1250 deg.C for 2-6 hr, and (f) cooling it to the cooling rate of 2-12 deg.C/min to obtain a ferrite sintered body (Ni-Zn).
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