Ultrafine Metal Magnetic Recording Powders Produced by the H2+H2O Reduction Process

Abstract

Abstract: metal magnetic recording powders was prepared in fluidized bed reactor. The results of characterizing with XRD, TEM, VSM etc show that the coercivity of metal powders can be improved by
the H₂+H₂O reduction process. At 460℃ the coercivity of the metal powders is 1520Oe, being 5.6% higher than that of the metal
powder produced by the traditional H₂ reduction process. The fluidized bed reactor is suitable for this process of industry production. It has a number of
advantages such as uniform reaction temperature, good gas-solids contacting, and freedom from sintering of the particles.

Key words: metal magnetic recording powders；α-Fe；H₂+H₂O reduction process

CLC Number:

TF123

WANG Qi-Xiang,SONG Bao-Zhen,LI Hong-Zhong. Ultrafine Metal Magnetic Recording Powders Produced by the H₂+H₂O Reduction Process[J]. Journal of Inorganic Materials.

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Ultrafine Metal Magnetic Recording Powders Produced by the H₂+H₂O Reduction Process

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