MICROSTRUCTURE AND MAGNETIC HARDENING OF SINTERED NdFeB MAGNETS DOPING Dy OR Dy_2O_3

Acta Metall Sin

1992, Vol. 28

Issue (3): 69-74 DOI:

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MICROSTRUCTURE AND MAGNETIC HARDENING OF SINTERED NdFeB MAGNETS DOPING Dy OR Dy_2O_3

ZHOU Shouzeng;ZHANG Jin;MA Deqing;GAO Maolin University of Science and Technology Beijing

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ZHOU Shouzeng;ZHANG Jin;MA Deqing;GAO Maolin University of Science and Technology Beijing. MICROSTRUCTURE AND MAGNETIC HARDENING OF SINTERED NdFeB MAGNETS DOPING Dy OR Dy_2O_3. Acta Metall Sin, 1992, 28(3): 69-74.

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Abstract The magnetic properties, microstructure and magnetic hardening of sintered(Nd_(1-x)Dy_x)_(16)Fe_(77.2)B_(6.8)and Nd_(16)Fe_(77.2)B_(6.8)+y wt-% Dy_2O_3 magnets have been studied. As anaddition of Dy metal to the magnet during smelting, Dy atoms may enter the matrix phaseNd_2Fe_(14)B, so as to enable enhance H_A, fine grains and improve boundary structure, as well asto increase H_(ci) of the magnet. If Dy_2O_3 added to powder material prior to sintering, Dy atomsdiffuse into the epitaxial layer of grains of matrix phase causing enhancement of K_1~1, also refine-ment of grains and improvement of boundary structure. The NdFeB based permanent magnetswith higher H_(ci) and greater (BH)_m may be produced by adding Dy_2O_3 about 2--3 wt--%which make a favourable condition for lower cost.

Key words: NdFeB magnet coercivity microstructure

Received: 18 March 1992

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1 Sagawa M, Fujimura S, Yamamoto H, Matsuura Y, Hiraga K. IEEE Trans Magn, 1984; MAG-20: 1584
2 Tokunaga M, Endoh M, Harada H, Trout S R. J Appl Phys, 1988; 63; 3510
3 Zhou S Z, Guo C, Hu Q. J Appl Phys, 1988; 63; 3327
4 Ghandenari M H. Appl Phys Lett, 1986; 48: 548
5 周寿增,唐伟忠,王润.金属学报,1990;26:B290
6 Zhou Shouzeng, Tang Weizhong, Wang Run. In: Xu Guangxian, Xiao Jimei, Yu Zongsen, Chen Minbo eds., Proc 2nd Int Conf on Rare Earth Development and Applications, Vol. Ⅱ, International Academic Publishers, 1991: 601

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