Characterization of soft ferromagnetic material
Improving Flux Models
SPIN Applicazioni Magnetiche
Alessandro Tassi
Characterization of soft ferromagnetic material
Spin Applicazioni Magnetiche Srl (*) recently equipped with specific
instrumentation for the complete dynamic characterization of soft
ferromagnetic materials, such as :




FeSi
FeNi
FeCo
Other magnetic steels and soft magnetic materials
(C10, C100, Fe360 and similar, 10SPb20, AISI430, …)
It is possible to measure them as sheets or ring,
ring or even assembled
motor stators or rotors
(*) Spin Applicazioni Magnetiche Srl is the Italian distributor of CEDRAT, and an active partner in
our network
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- Soft material characterization -
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Applicazioni Magnetiche
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Applications

Electric motors and generators

Sensors

Transformers
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Linear actuators, solenoids, electromagnets
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Magnetic induction systems
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Magnetic couplings
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Why characterizing soft magnetic materials ?

Computer electromagnetic design, either FEM or lumped circuit
needs first magnetization curve.
 To know “magnetic losses” (hysteresis + eddy current).
 For quality control of incoming materials.
 To



optimize your device:
To lessen losses
To reduce overall dimensions
To increase performances
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First magnetizaton curve
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In literature and web
the magnetic properties of some materials do not
appear: why ?
1.
Soft magnetic materials are measured at low or very low fields
(from few A/m) and often they are needed in frequency.
2.
Several grades used for magnetic purposes are not mainly used for
magnetic purposes: i.e. DC01 e DC04, C10C100, 10SPb20,
Fe370, Fe400 …
3.
High costs and specialization of measuring equipment.
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Diapositive 6
a6
do not appear
aripoche; 20/07/2012
Measuring system
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Samples
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Sheets
(max. And suggested:
80x80x1,5 mm)

Ring samples

Stacked stator or rotors
- Soft material characterization -
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Samples
Single strips or sheets:
 suggested dim. 80x80 mm
 thickness max 1,5 mm
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Applicazioni Magnetiche
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Samples
 ring samples
 stacked stators
and rotors
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Applicazioni Magnetiche
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Measuring range
 Magnetic induction “J”: from 0,001 to 2 Tesla
 Magnetic field strength “H” : from 1 to 10000 A/m
 Frequency:
Frequency from quasi static to 1 kHz
(send requests for higher frequencies)
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Applicazioni Magnetiche
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Measured properties
Magnetic losses (total, hysteresis and eddy current)
Hysterisis loop
Residual induction (Br)
Coercive force (Hc)
1° magnetization curve B(H)
Permeability curve (H)
Magnetic induction (J)
Magnetic field strength (H)
Induction from factor
…
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Measured properties
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Measured properties
Measured results can be saved/exported directly in txt or csv (excel) format
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Measured properties
Measured results can be saved/exported directly in txt or csv (excel) format
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Applicazioni Magnetiche
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Contact
Interested in knowing more about material characterization?
Feel free to contact our expert:
Applicazioni Magnetiche
Tel. +39 0523 997490
Fax + 39 0523 733364
info@spinmag.it
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Applicazioni Magnetiche
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