| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-permeability electromagnetic wave absorptive composite superior in electromagnetic wave absorption in the submicrowave bands of 300 MHz-3 GHz. SOLUTION: The flat metal magnetic powder has a composition of Al and/or Si 15-35% (atomic percent), Ni 0.1-20%, Cr 0.1-10% and Fe, the rest and inevitable impurities, and contains a flat metal magnetic powder with a mean thickness (d) of 0.5-3 μm, a grain size D50 of 5-30 μm and an aspect ratio (D50/d) of 2-60. D50 is a grain size at which the weight accumulated from smaller grain sizes obtained by a grain size distribution meter reaches 50%, and the grains of the powder are mutually isolated and aligned in the lengthwise direction in a blended and denatured binder of a flexible thermoplastic resin and rubber. |
