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Permanent Magnet Material Specs
It is important to look at the specific magnetic requirements in your sensor before specifying anything. In a variable reluctance sensor, where the operating point (load line) range of the magnet is probably pretty well defined, you will want to get a minimum Br which largely will define the...- RMWS
- Post #9
- Forum: Magnetic engineering
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AISI 405 BH curve
My laboratory can measure B,H curves on magnetic materials. Let me know if we can help out. KJS Associates. Magnetic Instrumentation, Inc. www.maginst.com- RMWS
- Post #3
- Forum: Magnetic engineering
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Ferrite Magnets
Electrical resistivity of sintered ceramic ferrite magnets is typically around 10^+6 ohm-cm. Sintered Neodymium-iron-boron ("Neo" or "NdFeB") magnets have around 160x10^-6 ohm-cm resistivity. That's nearly 12 orders of magnitude difference! By comparison, the value for copper is about 1.7x10^-6...- RMWS
- Post #14
- Forum: Magnetic engineering
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CUTTING FERRITE
The main reasons sintered ferrites are so difficult to shape are 1) they are very brittle and have a glass-like structure which makes for relatively poor mechanical strength, and 2) being ceramic materials they have very poor heat conductivity. That's why the water cooling is crucial. If you...- RMWS
- Post #6
- Forum: Magnetic engineering
