| abstract |
In order to slow down the decay rate of the coercive force of the NdFeB strong magnet, the present application provides a high coercivity NdFeB strong magnet, a preparation method thereof, and a cylindrical magnet block made of the magnet, mainly including the following parts by weight Number of raw materials: praseodymium neodymium alloy 20-29%, copper 0-2%, zirconium 0-2%, cobalt 0-2%, niobium 0-2%, aluminum 0-2%, gallium 0-2%, dysprosium 1 ‑5%, the balance being iron. The present application has the advantage of slowing down the decay rate of the coercive force of the NdFeB strong magnet. |