| Ndfeb is composed of the material? |
| Date：2014-04-23 Views：2233 |
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Main raw materials of ndfeb permanent magnet with a rare earth metal, metal iron and nonmetal elements neodymium boron (sometimes adding aluminum, cobalt, praseodymium, dysprosium, terbium, gallium, etc.), the general expressions for the: RE2TM14B (RE = Nd, Pr, Dy TM = Fe, Co) Ndfeb permanent magnetic material based on Nd2Fe14B ternary compound as matrix, its content should be close to compound Nd2Fe14B formula is. But according to Nd2Fe14B composition ratio in full, magnets, magnetic can is very low, even no magnetic. Only actual of neodymium magnets and boron content than Nd2Fe14B compounds and neodymium boron content (that is, the formation of rich and rich boron phase neodymium) to get better performance of permanent magnet. Matrix Nd2Fe14 phase This phase is the main phase of magnets, its volume percentage (a reasonable fixed after smelting ingot) determines the residual magnetism of the magnet (Br), the maximum magnetic energy product (BH) (m), and forming the distribution of magnetic field orientation is to implement it to the molecular structure of the magnetic axis (C) are orderly arranged along the direction of orientation, so as to realize higher magnetic performance. |