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Fe-metalloids bulk glassy alloys with high Fe content and high glass-forming ability

  • Akihiro Makino (a1), Takeshi Kubota (a1), Chuntao Chang (a1), Masahiro Makabe (a1) and Akihisa Inoue (a1)...


The coexistence of high Fe content and high glass-forming ability (GFA) has been earnestly desired from academia to industry. We report a novel Fe76Si9B10P5 bulk metallic glass with an unusual combination of high magnetization of 1.51 T due to high Fe content as well as high GFA leading to a glassy rod with a diameter of 2.5 mm despite not containing any glass-forming metal elements. This alloy composed of familiar and low-priced elements, also exhibiting very excellent magnetic softness, has a great advantage for engineering and industry, and thus should make a contribution to energy saving and conservation of earth’s resources and environment.


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1Inoue, A.Shen, B.L.: New Fe-based bulk glassy alloys with high saturated magnetic flux density of 1.4–1.5 T. Mater. Sci. Eng., A 375–377, 302 2004
2Inoue, A.Park, R.E.: Soft magnetic properties and wide supercooled liquid region of Fe–P–B–Si base amorphous alloys. Mater. Trans., JIM 37, 1715 1996
3Mizushima, T., Ikarashi, K., Makino, A.Inoue, A.: Structure and magnetic properties of bulky Fe–Al–Ga–P–C–B–Si glassy alloys in a ringed form prepared by copper mold casting. IEEE Trans. Mag. 35, 3361 1999
4Koshiba, H., Inoue, A.Makino, A.: Fe-based soft magnetic amorphous alloys with a wide supercooled liquid region. J. Appl. Phys. 85, 5136 1999
5Shen, B.L., Akiba, M.Inoue, A.: Effect of Si and Mo additions on glass-forming in FeGaPCB bulk glassy alloys with high saturation magnetization. Phys. Rev. B 73, 104204 2006
6Makino, A., Inoue, A.Mizushima, T.: Soft magnetic properties of Fe-based bulk amorphous alloys. Mater. Trans., JIM 41, 1471 2000
7Makino, A., Bitoh, T., Inoue, A.Greer, A.L.: Soft magnetic bulk glassy alloy synthesized by flux melting and water quenching. Mater. Sci. Forum 539–543, 1921 2007
8Inoue, A., Shen, B.L.Chang, C.T.: Super-high strength of over 4000 MPa for Fe-based bulk glassy alloys in [(Fe1−xCox)0.75B0.2Si0.05]96Nb4 system. Acta Mater. 52, 4093 2004
9Chang, C.T., Shen, B.L.Inoue, A.: FeNi-based bulk glassy alloys with superhigh mechanical strength and excellent soft-magnetic properties. Appl. Phys. Lett. 89, 051912 2006
10Okamoto, P.R., Lam, N.Q.Rehn, L.E.: Physics of crystal-to-glass transformations in Solid State Physics edited by H. Ehrenreich and F. Spaepen, Academic Press San Diego, CA 1999 Vol. 52, 1–133
11Fujimori, H., Ohta, S., Masumoto, T.Nakajima, K.: Magnetic after-effect on soft magnetic properties of amorphous ferromagnets in Rapidly Quenched Metals III, edited by B. Cantor The Metal Society London, UK 1978 Vol. 2, 232–239
12Kronmüller, H.: Micromagnetism and microstructure of amorphous alloys. J. Appl. Phys. 52, 1859 1981
13Kronmüller, H.: Theory of the coercive field in amorphous ferromagnetic alloys. J. Magn. Magn. Mater. 24, 159 1981
14Bitoh, T., Makino, A.Inoue, A.: Origin of low coercivity of Fe–(Al, Ga)–(P, C, B, Si, Ge) bulk glassy alloys. Mater. Trans. 44, 2020 2003
15Bitoh, T., Makino, A.Inoue, A.: Origin of low coercivity of (Fe0.75B0.15Si0.1)100−xNbx (x = 1 to 4) glassy alloys. J. Appl. Phys. 99, 08F102 2006
16Inoue, A., Shinohara, Y.Gook, J.S.: Thermal and magnetic properties of bulk Fe-based glassy alloys prepared by copper mold casting. Mater. Trans., JIM 36, 1427 1995
17Inoue, A., Takeuchi, A., Zhang, T., Murakami, A.Makino, A.: Soft magnetic properties of bulk Fe-based amorphous alloys prepared by copper mold casting. IEEE Trans. Magn. 32, 4866 1996
18Zhang, T.Inoue, A.: Bulk glassy alloys in (Fe, Co, Ni)–Si–B system. Mater. Trans. 42, 1015 2001
19Song, D.D., Kim, J-H., Fleury, E., Kim, W.T.Kim, D.H.: Synthesis of ferromagnetic Fe-based bulk glassy alloys in the Fe–Nb–B–Y system. J. Alloys Compd. 389, 159 2005
20Lu, Z.P., Tan, H., Li, Y.Ng, S.C.: The correlation between reduced glass transition temperature and glass forming ability of bulk metallic glasses. Scripta Mater. 42, 667 2000
21Lu, Z.P.Liu, C.T.: A new glass-forming ability criterion for bulk metallic glasses. Acta Mater. 50, 3501 2002



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