14 years experience expert of stable permanent magnet supplier

The New Technology PVD of Our Magnets

Physical vapour deposition (PVD)

Grain boundary diffusion process (Dysprosium, Terbium)

Key word: High HCJ & High (BH)max & High thermal stability

Current situation:

  1. Comprehensive properties limited. N50H, N48SH, N45UH, N35EH.
  2. High HCJ & (BH) max unavailable or not common in the market, such as N50UH, N48EH, N50SH, N48UH.
  3. High grade means high price.

What we can do:

Improving the Comprehensive Magnetic Properties of magnets, meanwhile reduce the cost.

  1. Reduce formula cost.
  2. New option for motor design: High torque & high working temperature is avaliable for some special motor.
  3. Replace other magnets, such as Samarium cobalt.

What we have:

  1. Original magnet manufacture is core competencies.
  2. Advanced PVD process centre & Independent grain boundary diffusion process.
  3. Experienced R&D team.

Technical data comparison

Substrate magnet Diffusion
(Dy)
Diffusion
(Tb)
After Diffusion
Grade dimension Hcj
(KOe)
Magnet Flux
(nVsm)
Hcj
(KOe)
Hcj
(KOe)
Magnet Flux
(nVsm)
N45SH 30×14.5×2.5 20.25 1.283 1.294 27.34 29.56 1.293 1.29
N45M 32x12x3 15.2 1.043 1.044 20.23 22.81 1.05 1.053
N52 14×11.5×2.5 13.18 0.785 0.789 19.07 21.16 0.786 0.789
Substrate magnet Diffusion
(Dy)
After Diffusion Dysprosium
Grade dimension Hcj
(KOe)
Hcj
(KOe)
Aging test condition Aging test result
N45SH 30×14.5×2.5 20.25 27.34 130°C
2hours
1mm iron
1.284 1.281 1.283 1.282 1.279
1.282 1.278 1.28 1.28 1.276
0.16% 0.23% 0.23% 0.16% 0.23%
N45M 32x12x3 15.2 20.23 130°C
2hours
1mm iron
1.032 1.028 1.035 1.035 1.026
0.873 0.866 0.896 0.879 0.895
15.41% 15.76% 13.43% 15.07% 12.77%
N52 14×11.5×2.5 13.18 19.07 130°C
2hours
1mm iron
0.782 0.769 0.783 0.784 0.746
0.675 0.669 0.693 0.682 0.676
13.68% 13.00% 11.49% 13.01% 9.38%
Substrate magnet Diffusion
(Dy)
After Diffusion Dysprosium
Grade dimension Hcj
(KOe)
Hcj
(KOe)
Aging test condition Aging test result
N45SH 30×14.5×2.5 20.25 29.56 150°C
2.5hours
1mm iron
1.303 1.296 1.299 1.296 1.296
1.284 1.267 1.284 1.281 1.277
1.46% 2.24% 1.15% 1.16% 1.47%
N45M 32x12x3 15.2 22.81 130°C
2hours
1mm iron
1.053 1.057 1.056 1.058 1.056
1.046 1.051 1.047 1.046 1.049
0.66% 0.57% 0.85% 1.13% 0.66%
N52 14×11.5×2.5 13.18 21.16 130°C
2hours
1mm iron
0.792 0.79 0.793 0.794 0.791
0.785 0.778 0.786 0.785 0.788
0.88% 1.52% 0.88% 1.13% 0.38%

Price comparison

The semifinished magnet price reduce much, which lead to reduce 10-20% for the final magnet price.

Our regular customers start to use new magnets after reliability test, and consider to develop new motor under higher magnets.

Weldome to discuss.

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