RARE EARTH PERMANENT MAGNETIC MATERIAL AND PREPARATION METHOD THEREOF

文件类型：PDF文档
文件大小：935K
A rare earth permanent magnetic material is provided, which is represented by the general formula of Ra-x-yHoxDyyFe1-a-b-c-dCodMcBb, wherein x, y, a, b, c and d are weight percentages of corresponding elements, in which 28%≤ a ≤34%, 0.95%≤ b ≤1.3%, 0≤ c ≤1.5%, 1%≤ d ≤10%, 15%≤ x ≤20% and 3%≤ y ≤8%; wherein R is a rare earth element, which is selected from the group consisting of Nd, Pr, La, Ce, Gd, Tb and combinations thereof; and wherein M is selected from the group consisting of Al, Cu, Ti, V, Cr, Zr, Hf, Nb, Sn, Mo, Ga, Si and combinations thereof. A method for preparing the rare earth permanent magnetic material is also provided.