| 简介 |
The invention relates to a micro-composite material based on permanent magnets formed from magnetically hard ceramic particles of hexagonal ferrite and magnetically soft particles of metal alloys, and to the method for producing same by means of mechanical alloying in the presence of a coupling agent. Nanoparticle-based permanent magnets without rare earth elements have a complex and costly industrial production method. The invention describes the production of a composite material based on micro-scale (non-nano-scale) ferrite and metallic alloys, by means of mechanical grinding methods. A product is obtained using a low-cost, industrialisable, easily scalable production method, with which composite materials with favourable micro-structural and magnetic properties are obtained, said materials being characterised in that they have an increase in maximum energy product (BHmax) of up to 30% with respect to the main component of ferrite. |
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