This technology is providing the preparation of magnetic
powders of wide variety of materials.
Features:
BZMP (NdFeB powders) manufactured by new method are characterized
by stable granulometry parameters, high-level of uniformity
of alloying distribution in powder particles
and fine-grained structure. This facilitates the
forming the high coercivity condition of the material.
Common parameters:
Particle size: less than 400 mkm; Hci: 240 - 1300 kA/m;
Br : 0.75 - 1.1 T; (BH)max: not less than 80 kJ/m3
Competitive advantages.
Method of centrifugal atomization (CA) is featured by
cheaper, simpler and more productive equipment than in
spinning Magnequench (SM) technology. Productivity of
CA 5-7 times as much as in SM.
· CA technology is free from processing problems inherent
to SM technology
· Capability to control the thickness of flakes produced
by CA method regardless of quenching rate, in comparison
with SM methods, allows for obtaining the optimal quenched
flakes in wide range of thickness (5 - 50 mkm) where nano-crystalline
and amorphous powders can coexist
· Effective using the controlled crystallization annealing
allows for obtaining powders of a wide combination of magnetic and
other physical properties
The centrifugal atomization for production of RQMP is the only reliable alternative to Magnequench technology of melt spinning.
