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-1-
2013.07.03 Revised
MAGFINE TECHNICAL DATASHEET
World’s Strongest Bonded Magnet
-2-
1 MagFine Technology
2 MagFine Powder Datasheet
-1 Magnetic Properties
-2 Particle Distribution and Shape
3. MagFine Magnet Datasheet
(Injection molding)
-1. Magnetic properties
-2. Characteristics
4 MagFine Magnet Datasheet
(Compression molding )
-1 Lineup
-2 MF14C
-3 MF16C
-4 MF18C
5. Mechanical / Physical Properties
6. Coolant resistance of Injection molding
Index
-3-
As a material maker for the Toyota Group, Aichi Steel has continued to supply new materials that support the
reduction in weight and increase in performance of motor vehicles. As motor vehicles become increasingly electrified and
connected, the growing need for lighter high performance electric motors is increasing attention on high powered bonded
magnets. The world’s strongest bonded magnet, MagFine, developed by Aichi Steel, is attracting attention as the core
material for realizing the next generation of revolutionary motors.
■History of Anisotropic Bonded Magnets
GM withdrew in ’95
→Aichi Steel (Toyota) succeeded in ‘03
■Principle of d-HDDR
Company Outline
MagFine Technology
The anisotropic NdFeB bonded magnet MagFine (MF) is a
superior bonded magnet with the world’s strongest magnetism of
25MGOe and heat resistance to 150C. Discovered in 1982, the
world’s strongest NdFeB magnets have been produced by sintering or
as isotropic bonded magnets. Due to the poorer magnetic properties
of isotropic bonded magnets, the development of anisotropic bonded
magnets has been awaited for 20 years. Aichi Steel discovered the
fundamental process (d-HDDR) for making anisotropic magnet
powder and have succeeded in commercializing an anisotropic
bonded magnet.
The name MagFine comes from the word Magnet and the Fine
microstructure of the powder which is created by our d-HDDR process.
What is MagFine?
0.2μm
■Microstructure of MagFine Powder
Controlling the speed of the absorption/desorption reaction
between NdFeB allow and Hydrogen to a critical speed
makes it possible to realize the miniaturization and
anisotropy of the crystal grains, producing a superior
magnetic powder.
Principle of d-HDDR (discovered1996)
1980 1990 2000 2010 0
10
20
30
Ma
gn
eti
c P
erf
orm
an
ce
(MG
Oe
)
To downsize motors, GM developed isotropic bonded Nd magnet
(GM → Sold to M. Co in ’95) 1965~Bonded Ferrite
Success in commercializing
MagFine
‘20
‘95
C Co announced
Stopped in ‘99
‘88
B Co. file patent
Did not
commercialize
‘85
A Co filed patent
Failed to
commercialize
Succeeded in commercializing
MagFine with 25MGOe,
operating to 150⁰C
(Year)
Began development in '85→Reached 25MGOe
Crystal Direction: Random
H2 Pressure (atm)
2.0 0
MAGFINE (Anisotropic)
0 1.0 0.5 1.5
60
(BH
)max (
MG
Oe)
10
20
30
40
50
Isotropic
1
MAGFINE
Crystal Direction: Aligned
-4-
Until now, the rare earth elements Dy and Ga have
been added to increase the maximum operating
temperature. Now by utilizing fine grain crystals and non-
magnetic grain boundary film combined with the
development of our micro-capsule technology, we have
succeeded in mass-producing a low cost magnet that is
heat resistant to 150℃ without using Dy, Ga.
Operating Temperature of 150℃ without Dy or Ga (2010)
■ Microcapsule Technology
C-axis
Low melting point alloy (NdCuAl)
Grain boundary diffusion process
Nd2Fe14B
(Main phase)
0.3μm
Nd2Fe14B
(Main phase)
■ Miniaturization+Non-magnetic grain boundary
Nd rich grain boundary phase
0
0.5
1.0
1.5
-2 -1.5 -1 -0.5 0
Nd+CuAl
Diffusion Process
Magnetic Field μ0H / T
Ma
gn
etic P
ola
rity
J
/T
Previous Method
(Ga + Dy diffusion)
0
0.5
1.0
1.5
-2 -1.5 -1 -0.5 0
Magnetic Field μ0H / T
Ma
gn
etic P
ola
rity
J
/T
Dy
diffusion
New Alloy Dy, Ga free
Standard
alloy
Add Ga
Price of Rare Earth Elements
Nd:$42/kg Dy:$250/kg
Ga:$440/kg Co:$48/kg
Nd Sintered: Dy5%Co3%
Isotropic : Co4%
Nd +0.5%
Nd +1.5%
NdFeB NdFeB
NdCuAl layer
Hard resin
coating
Magnet
Powder
Microcapsule Magnet Powder
MAGFINE
Mother Material
Nd volume of NdFeB alloy27-27.5%
Crystal grain~100μm
d-HDDR process
Fine crystal grain
~0.3μm
TEM observation (EDS Map)
1) After NdFeNbB⇒d-HDDR process 2) After NdCuAl grain boundary diffusion process
100 nm100 nm100 nm100 nm100 nm
Nd
Cu Al
TEM
100 nm100 nm100 nm100 nm100 nm
Toyota Central R&D Labs
Nd, Cu concentrate in grain boundary
forming grain boundary phase
Nd
Cu Al
TEM
1) Oxidation Resistance Flux Loss at 150⁰C 2) Corrosion Resistance Flux Loss at 80⁰C 95%RH
-15
-10
-5
0
0 1 10 100 1000
Time [hr]
Flu
x L
os
s [
%]
New MAGFINE (’10)
First MAGFINE (’05)
Isotropic
Pc=2.0 (Assembly)
Target
-15
-10
-5
0
0 1 10 100 1000
Flu
x L
os
s [
%]
Time [hr]
Isotropic
New MAGFINE (‘10)
Condition: Uncoated
Pc=2.0 (Assembly)
Target
In addition, we developed technology to encapsulate
the magnetic powder giving superior reliability to isotropic
magnets even without coating.
Micro-capsule technology improves reliability (2010)
Oxidized coating
(passive coat)
-5-
MagFine Magnet Lineup
The mechanism of anisotropy has been clarified,
the d-HDDR process has advanced and the
performance of the magnet powder has been
increased. In 2010, Aichi Steel developed a new series
of heat resistant MagFine powders without the use of
Dy. These are known as MF15P and MF18P.
Magnets made by compression molding of these
powders are MF14C, MF16C and MF18C.
MF18C is a heat resistant MagFine able to be
used up to 150⁰C.
■2010 Lineup
15
20
25
10
iHc (kOe)
(BH
)ma
x (
MG
Oe
)
MF14C
MF18C
14 16 18
MF16C
12
■ MagFine Lineup
IsotropicMAGFINE
-0.33
-0.13
9.5
7.0
10.0
Compresー-sion
-0.47
-0.11
16.0
9.5
20.0
MF16C
CompressionPowder
MF18CMF14CMF18PMF15P
-0.46-0.56--%/℃Β
-0.11-0.11--%/℃Α
14.0
13.2
38.0
18.014.017.0kOeiHc
9.59.812.5kGBr
19.522.035.0MGOe(BH)max
IsotropicMAGFINE
-0.33
-0.13
9.5
7.0
10.0
Compresー-sion
-0.47
-0.11
16.0
9.5
20.0
MF16C
CompressionPowder
MF18CMF14CMF18PMF15P
-0.46-0.56--%/℃Β
-0.11-0.11--%/℃Α
14.0
13.2
38.0
18.014.017.0kOeiHc
9.59.812.5kGBr
19.522.035.0MGOe(BH)max
MAGFINE
0
5
10
15
20
0 800 1600 2400 3200
Coercivity/kA/m
Resid
ual F
lux D
ensity /kG
Sintered Ferrite
Isotropic
NdFeB Powder
Sintered Nd Magnet
New MagFine powder
without Dy addition
Dy Added
-6-
2-1. Powder Magnetic Characteristics
A. Specifications
Measurement method
・Capsule: φ5 mm x 7.5mm
・Particle size: ≦212 μm
・Weight of magnet powder: 150 ±5 mg
・Alignment field: 1.8T at 100 deg.C,
・Magnetization field : 45kOe
・Device: VSM (BHV-525H, Riken Denshi Co., Tokyo, Japan)
・Magnet powder was fixed with paraffin.
・Magnet Properties were calculated using 0.17 as demagnetizing factor.
B. Demagnetization Curve
Product name MF15P MF18P Isotropic
Br (T) 1.27-1.37 1.20-1.30 0.92
(kG) 12.7-13.7 12.0-13.0 9.2
Typical 13.2 kG 12.5 kG -
HCJ (kA/m) 1034-1193 1193-1432 764
(kOe) 13.0-15.0 15.0-18.0 9.6
Typical 14.0 kOe 17.0 kOe -
(BH)max
(kJ/m3) 278-318 239-302 136
MGOe 35.0-40 30.0-38 17.1
Typical 38 35 -
Typical Demagnetization Curve
0
0.2
0.4
0.6
0.8
1
1.2
1.4
-2 -1.5 -1 -0.5 0
Magnetic Field μ0H / T
Ma
gn
eti
c P
ola
riza
tio
n J
/
T
MF15P
MF18P
Isotropic
Temp.25⁰C
-7-
2-2. Powder Particle Distribution and Shape
A. Particle Distribution
measurement instrument:
Laser diffraction particle size analysis
*measurement method: HR-SEM
MF15P, MF18P
0
20
40
60
80
100
1 10 100 1000
Particle size / μm
Cu
mu
lati
ve
fre
qu
en
cy
, Q
3 /
%
Fre
qu
en
cy
, Q
3
<212 micrometer sieving
Mean diameter (volumetric)
110 micrometer
0
0.5
1
1.5
2
2.5
Average particle
size 100μm
B. Shape
Reference) Isotropic power
shape: granular shape: flake
500μm
Product
name
MF15P MF18P
Distribution <212μm <212μm
X10/μm 25-60μm 25-60μm
X50/μm 90-130μm 90-130μm
X90/μm 170-220μm 170-220μm
VMD/μm 90-140μm 90-140μm
500μm
-8-
0
2
4
6
8
10
-20 -15 -10 -5 0
H/kOe
M/kG
3-1. Injection Magnet Characteristics A. Specifications
Product name RNI-5214 RNI-5610 RNI-5214V RNI-5610V S5B-18MF S5P-13MF S5B-17ME S5P-12ME
Magnetic powder MF15P MF18P MF15P+SmFeN MF18P+SmFeN
Resin PA12 PPS PA12 PPS PA12 PPS PA12 PPS
Compound Name RNI-5214 RNI-5610 RNI-5214V RNI-5610V S5B-18MF S5P-13MF S5B-17ME S5P-12ME
Br [kG] 7.9 – 8.4 6.5 – 7.0 7,6 – 8.1 6.4 – 6.9 8.9 – 9.4 7.3 – 7.8 8.6 – 9.1 7.1 – 7.6
iHc [kOe] 13.0 – 14.0 13.0 – 14.0 16.0 – 17.0 16.0 – 17.0 12.0 – 13.0 12.5 – 13.5 13.5 – 14.5 14.0 – 15.0
bHc [kOe] 6.2 – 7.2 5.5 – 6.0 6.3 – 7.3 5.5 – 6.0 7.0 – 8.0 6.0 – 7.0 7.0 – 8.0 6.0 – 7.0
(BH)max [MGOe] 14.5 – 15.5 10.0 – 11.0 14.0 – 15.0 9.5 – 10.5 17.5 – 18.5 12.5 – 13.5 16.5 – 17.5 11.5 – 12.5
Temperature coefficient of Br [%/deg.C] -0.11
(RT-120 deg.C)
-0.14
(RT-150 deg.C)
-0.11
(RT-150 deg.C)
-0.11
(RT-150 deg.C)
Temperature coefficient of iHc [%/deg.C] -0.56
(RT-120 deg.C)
-0.49
(RT-150 deg.C)
-0.46
(RT-150 deg.C)
-0.47
(RT-150 deg.C)
Recoil permeability [%] 1.10-1.20 1.10-1.20 1.10-1.20 1.10-1.20
Density [g/cm3] 5.0 – 5.2 4.6 – 4.7 5.0 – 5.2 4.6 – 4.7 5.4 - 5.6 5.0 – 5.2 5.4 - 5.6 5.0 – 5.2
Coefficient of thermal expansion [1/K]* 4.41×10-5 2.69×10-5 4.41×10-5 2.69×10-5 6.62×10-5 2.00×10-5 6.62×10-5 2.00×10-5
Modulus of elasticity [GPa] 11.8 29.6 11.8 29.6
Tensile strength [MPa] 27.3 40.4 27.3 40.4
Flexural strength [MPa] 102 83 93 86 51 52 51 52
Poisson’s retio 0.36 0.27 0.36 0.27
Compression strength [MPa]
(0.2% proof stress) 90 125 90 125 45 110 45 110
Young’s modulus [MPa] 32.6 24.8 32.6 24.8 14.9 24.3 14.9 24.3
Electronic resistivity [Ωcm] 4 4 4 4 7 4 7 4
B. Demagnetization Curve
Compression
isotropic magnet
RNI-5610
S5P-12ME
Pc=2.0 Pc=1.0 Pc=0.5 M
agn
etic P
ola
rizatio
n J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 0.0 -0.5 -1.0 -1.5 -2.0
*Measurement temperature 30 ~150℃
**Measurement condition PA12 temp. 270℃, load 10kg
PPS temp. 300℃, load 10kg
These values are representative. They are not guaranteed values.
-9-
3-2. Magnetic Properties
A. Magnetic Properties
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
RNI-5214
(PA12) 0.79-0.84 7.9-8.4 1034-1114 13.0-14.0 493-573 6.2-7.2 115-123 14.5-15.5
RNI-5610
(PPS) 0.65-0.70 6.5-7.0 1034-1114 13.0-14.0 437-477 6.2-7.2 79-87 10.0-11.0
B. Demagnetization Curve
R.T
100℃
130℃
150℃
Pc=2.0 Pc=1.0 Pc=0.5
①MF15P base compound
0.0
0.2
0.4
0.6
0.8
1.0
-2.0 -1.5 -1.0 -0.5 0.0
Magnetic Field μ0H / T
Magnetic P
ola
rization J
/ T
RNI-5610
-10-
2
3
4
5
6
7
8
-5 -4 -3 -2 -1 0
C. Recoil
D. Aging Test
E. Magnetization
B /
kG
H / kOe
0
20
40
60
80
100
120
0 1 2 3 4 5
Magnetization field / T
Br/
Br(
4.0
T)(
%)
130deg.C
150deg.C
-20
-15
-10
-5
0
0 1 10 100 1000 Exposure time / hr
Flu
x lo
ss(%
)
RNI-5610
-11-
0
5
10
-20 -15 -10 -5 0
H/kOe
M/kG
A. Magnetic Properties
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
RNI-5214V
(PA12) 0.76-0.81 7.6-8.1 1273-1353 16.0-17.0 501-581 6.3-7.3 111-119 14.0-15.0
RNI-5610V
(PPS) 0.64-0.69 6.4-6.9 1273-1353 16.0-17.0 414-493 5.2-6.2 75-83 9.5-10.5
B. Demagnetization Curve
R.T
80℃
110℃
135℃
0.0
Magnetic P
ola
rization J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 -0.5 -1.0 -1.5 -2.0
Pc=2.0 Pc=1.0 Pc=0.5
②MF18P base compound
150℃
RNI-5610V
-12-
2
3
4
5
6
7
8
-5 -4 -3 -2 -1 0
C. Recoil
D. Aging Test
E. Magnetization
B /
kG
H / kOe
Br/
Br(
4.5
T)
/ %
Magnetization field / T
0
20
40
60
80
100
120
0 1 2 3 4 5
-20
-15
-10
-5
0
0 1 10 100 1000
Exposure time / hr
Flu
x lo
ss (
%) 130deg.C
150deg.C
RNI-5610V
-13-
A. Magnetic Properties
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
S5B-18MF
(PA12) 0.89-0.94 8.9-9.4 955-1035 12.0-13.0 557-637 7.0-8.0 139-147 17.5-18.5
S5P-13MF
(PPS) 0.73-0.78 7.3-7.8 995-1074 12.5-13.5 477-557 6.0-7.0 99-107 12.5-13.5
B. Demagnetization Curve
R.T
100℃
130℃
Pc=2.0 Pc=1.0 Pc=0.5
②MF15P+SmFeN base compound
150℃
0.0
0.2
0.4
0.6
0.8
1.0
-2.0 -1.5 -1.0 -0.5 0.0
Magnetic Field μ0H / T
Magnetic P
ola
rization J
/ T
S5P-13MF
-14-
4
5
6
7
8
-5 -4 -3 -2 -1 0
C. Recoil
D. Aging Test
E. Magnetization
B /
kG
H / kOe
0
20
40
60
80
100
120
0 1 2 3 4 5 Magnetization field / T
Br/
Br(
4.0
T)(
%)
130deg.C
150deg.C
-20
-15
-10
-5
0
0 1 10 100 1000 Exposure time / hr
Flu
x lo
ss(%
)
S5P-13MF
-15-
0
5
10
-20 -15 -10 -5 0
H/kOe
M/kG
A. Magnetic Properties
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
S5B-17ME
(PA12) 0.89-0.94 8.9-9.4 955-1035 12.0-13.0 557-637 7.0-8.0 139-147 17.5-18.5
S5P-12ME
(PPS) 0.73-0.78 7.3-7.8 995-1074 12.5-13.5 477-557 6.0-7.0 99-107 12.5-13.5
B. Demagnetization Curve
R.T
80℃
110℃
135℃
0.0
Magnetic P
ola
rization J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 -0.5 -1.0 -1.5 -2.0
Pc=2.0 Pc=1.0 Pc=0.5
②MF18P+SmFeN base compound
150℃
-16-
2
3
4
5
6
7
8
-5 -4 -3 -2 -1 0
C. Recoil
D. Aging Test
E. Magnetization
B /
kG
-60
-50
-40
-30
-20
-10
0
0 1 10 100 1000
Exposure time / hr
Flu
x lo
ss /
%
Exposure time / hr
0 1 10 100 1000
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
130deg.C
150deg.C
180deg.C
H / kOe
Br/
Br(
4.0
T)
/ %
0
20
40
60
80
100
120
0 1 2 3 4 5
Magnetization field / T
S5P-12ME
-17-
4-1. Compression Magnet Characteristics A. Specifications
Product name MF14C MF16C MF18C
Isotropic Block Ring Block Ring Block Ring
Br [kG] 9.0 – 10.7 8.5 – 10.1 8.5 – 10.5 8.0 – 10.0 8.5 – 10.5 8.0 – 10.0 7.3
iHc [kOe] 13.0 – 14.5 13.0 – 14.5 15.0 – 17.0 15.0 – 17.0 16.5 – 18.0 16.5 – 18.0 9.5
bHc [kOe] 7.0 – 8.5 6.7 – 8.2 7.0 – 8.5 6.7 – 8.2 7.5 – 9.0 7.2 – 8.7 5.9
(BH)max [MGOe] 19.0 – 23.0 17.0 – 21.0 18.0 – 22.0 16.5 – 20.0 17.5 – 21.5 16.0 – 19.5 10.0
Temperature coefficient of Br [%/deg.C] -0.11
(RT-120 deg.C)
-0.11
(RT-150 deg.C)
-0.11
(RT-150 deg.C)
-0.12
(RT-120 deg.C)
Temperature coefficient of iHc [%/deg.C] -0.56
(RT-120 deg.C)
-0.47
(RT-150 deg.C)
-0.46
(RT-150 deg.C)
-0.35
(RT-120 deg.C)
Recoil permeability [%] 1.10-1.20 1.10-1.20 1.10-1.20 1.2
Density [g/cm3] 6.1 - 6.3 5.9 – 6.2 6.1 - 6.3 5.9 – 6.2 6.1 - 6.3 5.9 – 6.2 6.0
Coefficient of thermal expansion [deg.C-1]
(JIS K7197)
Parallel to alignment direction
9.6 x 10-6 –
Perpendicular to alignment direction
4.3 x 10-6 –
Modulus of elasticity [GPa] R.T 32, 150℃ 21 –
Compression strength [MPa] 100-200 –
Electronic resistivity [mΩcm] 5.0- 6.0 –
B. Demagnetization Curve
※Typical magnet shape
• Block magnet: 7mm x 7mm x 7mm
• Ring magnet: O.D 26mm-Thickness 1.0mm-Length 16mm
0
5
10
-20 -15 -10 -5 0H/kOe
M/kG
MF14C
Isotropic
MF16C
MF18C
Pc=2.0 Pc=1.0 Pc=0.5
Ma
gn
etic P
ola
rizatio
n J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 0.0 -0.5 -1.0 -1.5 -2.0
-18-
0
5
10
-20 -15 -10 -5 0
H/kOe
M/kG
4-2. Magnetic Properties
A. Magnetic Properties
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
Block magnet 0.90-1.07 9.0-10.7 1034-1154 13.0-14.5 557-677 7.0-8.5 151-183 19.0-23.0
Ring magnet 0.85-1.01 8.5-10.1 1034-1154 13.0-14.5 533-653 6.7-8.2 135-167 17.0-21.0
B. Demagnetization Curve
R.T
100℃
120℃
150℃
※Typical magnet shape
• Block magnet:7mm x 7mm x 7mm
• Ring magnet: O.D 26mm-Thickness 1.0mm-Length 16mm
0.0
Magnetic P
ola
rization J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 -0.5 -1.0 -1.5 -2.0
Pc=2.0 Pc=1.0 Pc=0.5
① MF14C
-19-
D. Irreversible Loss C. Recoil
E. Aging Test F. Humidity Test
G. Magnetization
-50
-40
-30
-20
-10
0
0 50 100 150 200
Temperature / ℃Flu
x Loss
/ %
in Air
non-coated
Holding time : 5min
0
20
40
60
80
100
120
0 1 2 3 4 5
Magnetization field / T
Br/
Br(
4.5
T)
/ %
Temperature / deg.C
0 50 100 150 200
Flu
x L
oss / %
0
-10
-20
-30
-40
-50
Exposure time / hr
0 1 10 100 1000
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
Magnetization field / T
0 1 2 3 4 5 0
20
40
60
80
100
120
Br/
Br(
4.5
T)
/ %
4
6
8
10
-5 -3 -1
H/kOe
M/k
G4
0
H / kOe
6
8
10
-1 -3 -5
B /
kG
80deg.C x 95%RH
120deg.C
150deg.C
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
Exposure time / hr
0 1 10 100 1000
-20-
0
5
10
-20 -15 -10 -5 0
H/kOe
M/kG
② MF16C
R.T
100℃
120℃
150℃
A. Magnetic Properties
B. Demagnetization Curve
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
Block magnet 0.85-1.05 8.5-10.5 1194-1353 15.0-17.0 557-677 7.0-8.5 143-175 18.0-22.0
Ring magnet 0.80-1.00 8.0-10.0 1194-1353 15.0-17.0 533-653 6.7-8.2 131-159 16.5-20.0
※Typical magnet shape
• Block magnet: 7mm x 7mm x 7mm
• Ring magnet: O.D 26mm-Thickness 1.0mm-Length 16mm
0.0
Magnetic P
ola
rization J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 -0.5 -1.0 -1.5 -2.0
Pc=2.0 Pc=1.0 Pc=0.5
-21-
D. Irreversible Loss C. Recoil
E. Aging Test F. Humidity Test
G. Magnetization
-50
-40
-30
-20
-10
0
0 50 100 150 200
Temperature / ℃
Flux
Los
s /
%
in Air
non-coated
Holding time : 5min
0
20
40
60
80
100
120
0 1 2 3 4 5
Magnetization field / T
Br/
Br(
4.5T
) /
%
B /
kG
Temperature / deg.C
0 50 100 150 200 F
lux L
oss / %
0
-10
-20
-30
-40
-50
Exposure time / hr
0 1 10 100 1000
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
Exposure time / hr
0 1 10 100 1000
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
Magnetization field / T
0 1 2 3 4 5 0
20
40
60
80
100
120
Br/
Br(
4.5
T)
/ %
4 0
H / kOe
6
8
10
-1 -3 -5 4
6
8
10
-5 -3 -1
H/kOe
M/k
G
80deg.C x 95%RH
120deg.C
150deg.C
-22-
0
5
10
-20 -15 -10 -5 0
H/kOe
M/k
G
③ MF18C
R.T
100℃
120℃
150℃
A. Magnetic Properties
B. Demagnetization Curve
Br iHc bHc (BH)max
T kG kA/m kOe kA/m kOe kJ/cm3 MGOe
Block magnet 0.85-1.05 8.5-10.5 1313-1432 16.5-18.0 597-717 7.5-9.0 139-171 17.5-21.5
Ring magnet 0.80-1.00 8.0-10.0 1313-1432 16.5-18.0 573-693 7.2-8.7 127-155 16.0-19.5
※Typical magnet shape
• Block magnet: 7mm x 7mm x 7mm
• Ring magnet: O.D 26mm-Thickness 1.0mm-Length 16mm
0.0
Magnetic P
ola
rization J
/ T
Magnetic Field μ0H / T
1.0
0.8
0.6
0.4
0.2
0.0 -0.5 -1.0 -1.5 -2.0
Pc=2.0 Pc=1.0 Pc=0.5
-23-
-50
-40
-30
-20
-10
0
0 50 100 150 200
Temperature / ℃Fl
ux L
oss
/ %
in Air
non-coated
Holding time : 5min
D. Irreversible Loss C. Recoil
E. Aging Test F. Humidity Test
G. Magnetization
0
20
40
60
80
100
120
0 1 2 3 4 5
Magnetization field / T
Br/
Br(
4.5T
) /
%
B /
kG
Temperature / deg.C
0 50 100 150 200 F
lux L
oss / %
0
-10
-20
-30
-40
-50
Exposure time / hr
0 1 10 100 1000
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
Exposure time / hr
0 1 10 100 1000
0
-10
-20
-30
-40
-50
-60
Flu
x L
oss / %
Magnetization field / T
0 1 2 3 4 5 0
20
40
60
80
100
120
Br/
Br(
4.5
T)
/ %
4 0
H / kOe
6
8
10
-1 -3 -5 4
6
8
10
-5 -3 -1
H/kOe
M/k
G
80deg.C x 95%RH
120deg.C 150deg.C
-24-
5. Mechanical / Physical Properties
6.0 g/cm 3 Molded density
9.6 × 10 - 6 ** % / ℃ Coefficient of thermal expansion
20 MPa Radial crushing strength
(27) MPa Hoop stress
1.1 * % Compression strain at breaking
100 * MPa Compressive strength
0.1 % Tensile strain at breaking
0.33 - Poisson's ratio
21 * GPa Modulus of elasticity
12 * MPa Tensile strength
Epoxy Binder resin
Compression
molding Type
6.0 g/cm 3 Molded density
9.6 × 10 - 6 ** % / ℃ Coefficient of thermal expansion
20 MPa Radial crushing strength
(27) MPa Hoop stress
1.1 * % Compression strain at breaking
100 * MPa Compressive strength
0.1 % Tensile strain at breaking
0.33 - Poisson's ratio
21 * GPa Modulus of elasticity
12 * MPa Tensile strength
Epoxy Binder resin
Compression
molding Type
*Measurement temperature: 150⁰C **Measurement temperature: -40 ⁰C ~ 150 ⁰C
-25-
6. Coolant resistance of Injection molding
Customer Magnet shape Material Coolant (Solvent) Testing condition Judgement Note
A companyΦ 10-L7mm(Injection)
18P+SmFeN+PPS Unknown(HFC+Oil)150℃、1,000hr、Pressure
vessel (Pressure : unknown)Applicable
including H2OReview needed
Freol-8G / R134a150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
55MT / R600a150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
FVC68D / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
RB32G / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
NM56 / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
RB68A / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
POE46 / R134a150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
FVC68D / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
RB32G / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
RB68A / R410A150℃、14days、Pressure
vessel (Pressure : unknown)Applicable
FVC68D / R410A170℃、21days、Pressure
vessel (Pressure : unknown)Applicable
RB32G / R410A170℃、21days、Pressure
vessel (Pressure : unknown)Applicable
RB68A / R410A170℃、21days、Pressure
vessel (Pressure : unknown)Applicable
Φ 10-L7mm(Injection)
B company 18P+SmFeN+PPS
B company
Including H2OTesting shape :
Motor
18P+SmFeN+PPSRoter shape
Roter shape 18P+SmFeN+PPS
-26-
1 Wano-wari, Arao-machi, Aichi-ken, JAPAN 476-8666
http://www.aichi-steel.co.jp
■Inquiries
Electromagnetic Products, Sales Div.
TEL: 052-603-9286 FAX: 052-603-9831
e-mail: [email protected]
13/5/2011 Technical Data