SmCo Magnets made of VACOMAX
Rare-Earth Permanent Magnets for High Temperature Applications. Now also in compliance with DFARS 225.7018, 10 USC. 2533c.
Samarium-Cobalt magnets made of VACOMAX® have particularly high coercivities with simultaneous high saturation polarization and excellent temperature and corrosion stability.
Benefits:
- Suitable for high temperature applications (depending on alloy up to max. 350 °C)
- High corrosion resistance against aggressive media
- Usually no coating necessary
- Low decrease of magnetic properties with increasing temperature due to high Curie temperature
- Servo motors
- Automotive applications (e.g. sensors...)
- High end sport cars
- Aviation
Magnets out of VACOMAX are produced by sintering using powder metallurgical processes. Depending on form, quantities, dimensions, tolerances and magnetic properties the magnets are produced out of bigger (isostatically) pressed blocks or die-pressed.
The magnetic properties are influenced by the alloy composition and the pressing method. Three different processes are possbile which are reflected in the alloy name with the letters HR, TP or AP. HR (High Remanence) refers to isostatically pressed magnets. In die-pressed design we differentiate between TP (Transverse-Pressed) and AP (Axial-Pressed)
When die-pressing, the powder particles are aligned by strong magnetic fields parallel (axial field for AP-grades) or perpendicular (transverse fields for TP-grades) to the direction of pressing depending on the geometry of the part. Isostatically or transverse-field pressed parts have an about 5 to 8 % higher remanence compared to axial-field pressed magnets.
- Servo motors
- Automotive applications (e.g. sensors...)
- High end sport cars
- Aviation
Magnets out of VACOMAX are produced by sintering using powder metallurgical processes. Depending on form, quantities, dimensions, tolerances and magnetic properties the magnets are produced out of bigger (isostatically) pressed blocks or die-pressed.
The magnetic properties are influenced by the alloy composition and the pressing method. Three different processes are possbile which are reflected in the alloy name with the letters HR, TP or AP. HR (High Remanence) refers to isostatically pressed magnets. In die-pressed design we differentiate between TP (Transverse-Pressed) and AP (Axial-Pressed)
When die-pressing, the powder particles are aligned by strong magnetic fields parallel (axial field for AP-grades) or perpendicular (transverse fields for TP-grades) to the direction of pressing depending on the geometry of the part. Isostatically or transverse-field pressed parts have an about 5 to 8 % higher remanence compared to axial-field pressed magnets.
Our VACOMAX® Alloys made of Samarium-Cobalt
Br min. [kG]
: 8.5 - 11.7 kGHcB min. [kOe]
: 7.5 - 10.8 kOeHcJ min. [kA/m]
: 640 - 1990 kA/mHcJ min. [kOe]
: 8 - 25 kOe(BH)max typ. [k/m3]
: 160 - 265 kJ/m³(BH)max typ. [MGOe]
: 15 - 33 MGOeThe values given for VACOMAX 175 AP and VACOMAX 190 HR are only provisional.
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