Abstract: The invention discloses a neodymium-iron-boron magnet material, a preparation method and use thereof. The neodymium-iron-boron magnet material comprises the following components of: 28-33 wt % of R, wherein R is a rare earth element, and R comprises Pr and 27-31.5 wt % of Nd; 0.30-1.3 wt % of Al; 0.35-0.6 wt % of Cu; ?0.85 wt % of Co; 0.98-1.2 wt % of B; ?0.25 wt % of Nb; 62-69 wt % of Fe, wherein wt % is a percentage of the mass of respective component in the total mass of the neodymium-iron-boron magnet material; and the contents of the Nb and the Pr in the neodymium-iron-boron magnet material satisfy the following formula: Nd/Pr?58. In the present invention, by optimizing the formula of the neodymium-iron-boron magnet material, the coercivity of the neodymium-iron-boron magnet material prepared is improved while maintaining higher levels of remanence and squareness.

Abstract: A R-T-B magnet and a preparation method thereof. The R-T-B magnet includes the following components of: ?30.0 wt % of R, said R is a rare earth element; 0.16-0.6 wt % of Cu; 0.4-0.8 wt % of Ti; ?0.2 wt % of Ga; 0.955-1.2 wt % of B; and 58-69% of Fe; wherein wt % is the mass percentage of respective component in the total mass of all components. The R-T-B magnet has higher remanence, coercivity, squareness and high-temperature stability.

Abstract: An R-T-B magnet includes the following components of: ?30.0 wt % of R, the R is a rare earth element; 0.02-0.14 wt % of Nb; 0.2-0.48 wt % of Cu; ?0.24 wt % of Ti+Nb; ?0.50 wt % of Al+Cu; ?0.955 wt % of B; and 58-69 wt % of Fe, wherein wt % is the mass percentage of respective component in the total mass of all components. The R-T-B magnet has remanence, coercivity, high-temperature stability and squareness at a better level. A method prepares the R-T-B magnet.

Abstract: The invention discloses an R-T-B magnet and a preparation method thereof. The R-T-B magnet comprises the following components of: ?30.0 wt % of R, wherein R is a rare earth element; 0.1-0.3 wt % of Nb; 0.955-1.2 wt % of B; 58-69 wt % of Fe, wherein wt % is a percentage of the mass of respective component to the total mass of all components; the R-T-B magnet further comprises Co and Ti; and in the R-T-B magnet, the ratio of the mass content of Co to the total mass content of “the Nb and the Ti” is 4-10. The present invention further optimizes the coordination relationship among the components in the R-T-B magnet, which can prepare a magnet material with relatively high levels of magnetic properties such as remanence, coercivity, squareness and the like.

Abstract: A neodymium-iron-boron permanent magnet material, a preparation method, and an application. The neodymium permanent magnet material includes R, Al, Cu, and Co; R comprises RL and RH; RL comprises one or many light rare earth elements among Nd, La, Ce, Pr, Pm, Sm, and Eu; RH comprises one or many heavy rare earth elements among Tb, Gd, Dy, Ho, Er, Tm, Yb, Lu, and Sc; the neodymium-iron-boron permanent magnet material satisfies the following relations: (1) B/R: 0.033-0.037; (2) AI/RH: 0.12-2.7. The neodymium-iron-boron permanent magnet material has uniquely advantageous magnetic and mechanical properties, with Br?13.12 kGs, Hcj?17.83 kOe, and bending strength?409 MPa.

Abstract: A neodymium-iron-boron magnetic material, a preparation method therefor and an application thereof. The neodymium-iron-boron magnetic material comprises the following components in percentage by mass: 29.5-31.5 wt. % of R, where RH>1.5 wt. %; 0.05-0.25 wt. % of Cu; 0.42-2.6 wt. % of Co; 0.20-0.3 wt. % of Ga; 0.25-0.3 wt. % of N; 0.46-0.6 wt. % of Al, or alternatively Al is less than or equal to 0.04 wt. % but is not 0; 0.98-1 wt. % of B; and 64-68 wt. % of Fe; wherein R is a rare-earth element and comprises Nd and RH, RH is a heavy rare-earth element and comprises Tb, and a mass ratio of Tb to Co is less than or equal to 15 but is not 0. The neodymium-iron-boron magnetic material has higher Hcj and Br, and lower absolute values of temperature coefficients of Br and Hcj.

Abstract: A high-Cu and high-Al neodymium iron boron magnet and a preparation method therefor. The high-Cu and high-Al neodymium iron boron magnet comprises: 29.5-33.5% R, over 0.985% B, over 0.50% Al, over 0.35% Cu, over 1% RH, and 0.1-0.4% high-melting-point elements N and Fe, wherein the percentages are the mass percentages of the elements in the total amount of elements, and the mass percentages of the element contents must satisfy the following relationships: (1) 1<RH<0.11R<3.54B; and (2) 0.12RH<Al. By means of combining Al, RH and high-melting-point metal elements that are added at a certain ratio, the problem in which the strength of a high-Cu magnet is insufficient is effectively solved, while the magnetic performance is the magnet material is ensured.

Abstract: A rare earth permanent magnet material and a raw Material composition, a preparation method therefor and use thereof. The rare earth permanent magnet material comprises the following components in percentage by mass: 29.0-32.0 wt. % of R. where R comprises RH, and the content of RH is greater than 1 wt. %; 0.30-0.50 wt. % of Cu (not including 0.50 wt. %); 0.10-1.0 wt. % of Co; 0.05-0.20 wt. % of Ti; 0.92-0.98 wt. % of 13; and the remainder being Fe and unavoidable impurities; wherein R is a rare-earth element and at least comprises Nd; and RH is a heavy rare-earth element and at least comprises Tb. The R-T-B system permanent magnet material exhibits excellent performance, wherein Br?14.30 kGs, and Hej?24.1 kOe. The invention can synchronously improve Br and Hcj.