亚洲欧美日韩一区二区

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      Your global supplier for materials

      Product Summary of Magnetic Shape Memory Material Datasheet

      Goodfellow is delighted to announce the addition of an exciting new product to our range – Magnetic Shape Memory Material. This patented NiMnGa single crystal material has some extremely innovative properties:

      Properties

      Material

      NiMnGa single Crystal

      Density

      8 g cm-3

      Melting point

      1130°C

      Elongation in Magnetic Field

      Up to 6%, typically 3 to 5%

      Response

      Up to 1 to 2 kHz

      Force Density

      About 2 MPa

      Work Output (force x stroke)

      Max 100 kJ/m3

      Fatigue Life

      Several hundred million cycles

      Magnetic Field

      <0.8T

      Maximum Operating Temperature

      45°C

      Temperature – Austenite Transformation

      50°C

      Temperature – Martensite Transformation

      50°C

      Curie Temperature

      95-105°C

      Crystallisation point

      1090°C

      Coefficient of thermal expansion

      20 x10-6 K-1 (@20-100°C)

      Thermal diffusivity

      4.4 mm2 s-1 (@ 22°C)

      Thermal conductivity

      16 W m-1 K-1 (@ 22°C)

      Electrical resistivity

      70 µOhm cm

      Temperature coefficient

      0.003 K-1

      Modulus of elasticity1

      8-20 GPa

      Hardness - Vickers

      130

      Compression stress

      >700 MPa

      Initial permeability (hard axis)

      2

      Maximum permeability (easy axis)

      90

      Coercivity, Hc

      4000 A m-1

      Activation field strength2

      150 kA m-1

      Saturation flux density2

      0.6 T

      Remanence from saturation

      0.02 T

      1 Modulus derived from the compression stress curve of the single variant sample

      2 @ 0 MPa stress

      Fast Response to Control Signal

      Strain versus field example curves at various pre-stress levels measured at 22°C

      Stress versus strain example curve measured at 22°C

      Instructions

      Please pay attention to the following instructions:

      • Do not heat the sample above 45 °C.1
      • Do not apply stresses above 5 MPa to the material1
      • Do not bend, or otherwise apply non-uniform stresses, to the material.1
      • Do not apply field or stress on the surface marked as “D” above.1
      • Apply uniform magnetic field in the direction perpendicular to the surface indicated with a blue dot.
      • We recommend recording the mechanical, thermal and magnetic history of each sample.

      1The material will not be destroyed, however it might change its twin structure. This can be easily restored by trained personnel.

      Literature

      1. E. Pagounis, Mater. Sci. Eng. R 56, 33 (2007).
      2. O. Heczko, L. Straka, J. Appl. Phys. 94, 7139 (2003).
      3. E. Pagounis, M. Laufenberg, Proceedings 12th International Conference on New Actuators, ACTUATOR 2010, pp. 731-733, 14-16.6.2010, Bremen, Germany.
      4. E. Pagounis, A. Laptev, J. Jungwirth, M. Laufenberg, M. Fonin, Scripta Mater. 88, 17 (2014).

       

      Please click here for an introduction and applications. Alternatively, if you would like to know more about this material, please send us an e-mail or telephone us using the numbers on our contact page.

      Please click here for our standard catalogue dimensions and prices.

      亚洲欧美日韩一区二区

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