PURPOSE: To obtain ferromagnetic metallic powder having superior oxidation stability, corrosion resistance and dispersibility by treating the surface of magnetic metallic powder with a specified silane compound.
CONSTITUTION: Iron powder or powder of an alloy consisting of iron and other metal such as Ti, V, Cr, Mn, Co or Ni is used as magnetic metallic powder. The surface of the magnetic metallic powder is treated with a silane compound represented by the formula (where each of R and R' is alkyl, and (n) is 2 or 3) to coat the surface of the powder with the silane compound by 0.1W20wt%, especially 0.5W5wt% of the amount of the powder. Dimethyldimethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, 2-chloroethyldimethoxysilane or the like is used as the silane compound.
UMEMURA SHIZUO
AONUMA MASASHI
MIYATSUKA HAJIME
| JPS51134899A | 1976-11-22 | |||
| JPS51104594A | 1976-09-16 |
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