The effects of refractory metals on the magnetic properties of /spl alpha/-Fe/R/sub 2/Fe/sub 14/B-type nanocomposites
作者： W.C. Chang , S.H. Wang , S.J. Chang , M.Y. Tsai , B.M. Ma
DOI: 10.1109/20.800493
关键词:
摘要: The phase transformations and magnetic properties of rare earth lean boron rich (Nd/sub 0.95/La/sub 0.05/)/sub x/Fe/sub bal./M/sub 2/B/sub 10.5/, where x=9.5 or 11 M=Cr, Ti, Nb, V, Mo, Zr, Nf, Ta, Mn W, melt spun ribbons have been investigated. Two phases, namely /spl alpha/-Fe R/sub 2/Fe/sub 14/B, were found in studied. A third phase, the 23/B/sub 3/, was also detected 9.5/Fe/sub 78/M/sub 10.5/ (M=Mo Mn). Remanence (B/sub r/) coercivity (/sub i/H/sub c/) values range 8.0 to 9.1 kG 9.5 18.9 kOe, respectively, achieved nanocomposites with merely two phases. Among compositions studied, Ti W-substitutions be most effective increasing B/sub r/ /sub c/, respectively. For a fixed refractory metal substitution, namely, an increase total concentration resulted small grain sizes high volume fraction 14/B phase. combination fine size led c/ maximum energy product, (BH)/sub max/ kG, 16.7 kOe 16.8 MGOe obtained on 11/Fe/sub 76.5/Ti/sub 10.5/.
harvard.edu
osti.gov
sci-hub.se 参考文章(7)
W. C. Chang, D. Y. Chiou, S. H. Wu, B. M. Ma, C. O. Bounds, High performance α-Fe/Nd2Fe14B-type nanocomposites Applied Physics Letters. ,vol. 72, pp. 121- 123 ,(1998) , 10.1063/1.121446
A. Manaf, M. Al-Khafaji, P.Z. Zhang, H.A. Davies, R.A. Buckley, W.M. Rainforth, Microstructure analysis of nanocrystalline Fe-Nd-B ribbons with enhanced hard magnetic properties Journal of Magnetism and Magnetic Materials. ,vol. 128, pp. 307- 312 ,(1993) , 10.1016/0304-8853(93)90476-I
D. Goll, M. Seeger, H. Kronmüller, Magnetic and microstructural properties of nanocrystalline exchange coupled PrFeB permanent magnets Journal of Magnetism and Magnetic Materials. ,vol. 185, pp. 49- 60 ,(1998) , 10.1016/S0304-8853(98)00030-4
S. Hirosawa, H. Kanekiyo, M. Uehara, Microstructure and magnetic properties of high-remanence Nd/sub 5/Fe/sub 71.5/Co/sub 5/B/sub 18.5/M (M=Al, Si, Ga, Ag, Au) rapidly solidified and crystallized alloys for resin-bonded magnets IEEE Transactions on Magnetics. ,vol. 29, pp. 2863- 2865 ,(1993) , 10.1109/20.281078
R. Fischer, T. Schrefl, H. Kronmüller, J. Fidler, Grain-size dependence of remanence and coercive field of isotropic nanocrystalline composite permanent magnets Journal of Magnetism and Magnetic Materials. ,vol. 153, pp. 35- 49 ,(1996) , 10.1016/0304-8853(95)00494-7
A. Manaf, R.A. Buckley, H.A. Davies, New nanocrystalline high-remanence Nd-Fe-B alloys by rapid solidification Journal of Magnetism and Magnetic Materials. ,vol. 128, pp. 302- 306 ,(1993) , 10.1016/0304-8853(93)90475-H
E.F. Kneller, R. Hawig, The exchange-spring magnet: a new material principle for permanent magnets IEEE Transactions on Magnetics. ,vol. 27, pp. 3588- 3600 ,(1991) , 10.1109/20.102931