| 摘要 |
PURPOSE:To easily produce flaky iron powder having a high aspect ratio by annealing iron powder, adding a very small amt. of a surfactant and making the iron powder flat by grinding with a grinder. CONSTITUTION:Iron powder is softened by annealing and <=1.0 wt.% one or more kinds of surfactants are added. The surfactants may be cationic surfactants such as triethanolamine and n-butylamine, nonionic surfactants such as ethylene glycol, propylene glycol and glycerol or anionic surfactants such as sodium oleate, zinc stearate, sodium stearate, calcium stearate and paraffin. The iron powder is then made flat by grinding with a grinder such as a vibrating ball mill to obtain the flaky iron powder having about 10/1-100/1 aspect ratio.
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