R-T-B-BASED PERMANENT MAGNETIC MATERIAL, RAW MATERIAL COMPOSITION, PREPARATION METHOD THEREFOR AND

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Disclosed are an R-T-B-based permanent magnetic material, a raw material composition, a preparation method therefor and a use thereof. The raw material composition of the R-T-B-based permanent magnetic material contains the following components in percentages by mass : R : 29.5-32%, R being a rare earth element containing at least Nd, and the content of Pr being 0-17%; Zr : 0.15- 0.50%; Cu : 0-0.08%, but not 0 and not 0.08; Co : 0-0.3%; M : 0-3%, M being one or more of Al, Ga, Ti, Nb, Hf, Si, Sn, Ge, Ag, Au, Bi and Mn; B : 0.95-1.05%; and Fe : 64-70%. The percentage is the mass percentage of the total mass of the raw material composition of the R-T-B-based permanent magnetic material, and the sum of the content of each component is 100%. The R-T-B-based permanent magnetic material of the present invention has the advantages of having a good squareness, a good high-temperature property and excellent mechanical properties.