FERRITE POWDERS


Ferrite powders consist of iron oxides that are sintered at high temperatures with Barium and Strontium carbonates, suitably milled and, if necessary, submitted to further purification processes. Ferrites are used for making sintered isotropic and anisotropic ceramic magnets, isotropic and anisotropic compounds used in the production of flexible-type magnets for applications in all sectors, and isotropic bituminous sand compounds for the production of flexible sheets used for sound dampening purposes by the household appliances and automotive industries. Ilpea’s ferrite powders may be broken down as follows:

1) Isotropic Ferrite Powders: primarily used for the manufacturing of sound dampening devices and isotropic flexible magnets.

Properties of isotropic powders
Tipo Carbonate Br (G) bHc (Oe) Density(g/cm3)
Fischer Fineness
(FSSS)
P01-B1 Barium > 1450 > 1050 > 3,50 2,0 – 4,0
P01-A Barium > 1.550 > 1.150 > 3,50 2,0 – 4,0
P01-Y Strontium > 1.600 > 1.090 > 3,60 2,0 – 3,5
P02-D Barium > 1.600 > 1.240 3,84 – 3,98 2,4 – 3,5
P02-Sr - D Strontium > 1.600 > 1.240 3,8 +/-0,15 2,4 – 3,5
(Values measured according to the ILPEA method)

2) Anisotropic Ferrite Powders: mainly used for the injection moulding or extrusion of magnets for special applications, such as ABS and EDS sensors.
 
Properties of anisotropic powders:
Type Br (G) bHc (Oe) jHc (Oe)
(BH) max
(MGOe)
 Density (g/cm3)
Fineness 
(FSSS)
P13-Sr > 2400 > 2070 > 2250 > 1,3 > 3,35 1,0-1,45
P10-Ba > 2650 > 2100 > 2300 > 1,7 > 3,25 1,7 +/- 0,2
P11-Sr > 2650 > 2100 > 2300 > 1,7 3,15+/- 0,05 1,7 +/- 0,2
(Values measured according to the ILPEA method)
Hard ferrite powder, suitable for the manufacturing of permanent magnets. For use on sound-proof panels, refrigerator doors, electric motors, magnetic encoders, etc.
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