Magnetic bonded ferrite powder

Specifications

1. For preparation of semi-anisotopic bonded magnets.
2. It compatible with the matrix material, such as CPE,NBR.

1.   Introduction of Product

      BMXF-2H is a barium ferrite powder for the preparation of semi-anisotopic bonded magnets.

      It is compatible with the matrix material, such as CPE, NBR. Permanent magnets are formed by extrudering technique.

 

2.  Typical Powder Properties

Chemical Composition          BaFe₁₂O₁₉

Average Partical Size            1.8-2.4  µm

 

Moisture           <0.5 %

 

Property of powder compacted model (Test condition A)

Br(mt)	bHc(kA/m))	iHc(KA/m)	(BH)max(KJ/m3)
>=135	>=80	>=170	>=3.1

 

3.  Bonded Magnet properties(Test Condition B)

Property	Units	Values
Weight% Loading	%	89.5
Residual Induction(Br)	mT	210-230
Coercive Force(bHc)	kA/m	119-141
Intrinsic Coercive Force(iHc)	kA/m	158-186
Peak Energy Product(BHmax)	kJ/m3	8.0-10.0

 

4. Test condition

 

Test condition A:

 

40 grams of powder mixed with 4 grams of wax heated at 110^oC  for 15 minutes to make the wax melt.

 

Then make the mixed powder pass through a 40-mesh sifter. 18 grams of the -40-mesh powder is

 

compressed at a 1.6*10⁴N/cm² Pressure to get a green sample for magnetic properties measuring.

 

Test condition B:

 

Compounding Equipment: Two roll rubber mill

 

The two roll mill is heated to 80^oC. 32 grams of binder is sheeted onto the mill and 460 grams of BMXF-2D powder is added and mixed with the binder. This mill sheet is calendered onto another which roll gap is adjusted to produce a 2.7mm sheet.

A portion of this mill is evaluated to determine magnetic peroperties.

 

5. Inspection record for user

 

 Name of material

 Lot No.

Delivered weight

Moisture

Magnetic properties