Coated acicular fine particulate materials, processes for...

Details Coated acicular fine particulate materials, processes for... Coated acicular fine particulate materials, processes for...

C - Chemistry, Metallurgy

01

B

C01B 31/30 (2006.01) B22F 1/00 (2006.01) G11B 5/706 (2006.01)

Patent

CA 2118301

ABSTRACT An acicular fine particulate material which is coated with a compound containing at least one element selected from among elements of Groups III and IV of the Periodic Table in Periods 5 and 6, the acicular fine particulate material being one of (i ) an acicular fine particulate material containing iron carbide, (ii ) an acicular fine particulate material containing iron carbide, metallic iron and carbon, and (iii ) an acicular fine particulate metallic iron containing carbon, is prepared by a promoted reduction reaction while being effectively prevented from sintering and consequently affords magnetic recording media having a high recording density.

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