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Synthesis of $Fe/Al_2O_3$ and $Fe/TiO_2$ nanocomposite powder by mechanical alloying  

Lee, Seong-Hee (Dept. of Advanced Materials Science and Engineering, Mokpo National University)
Lee, Chung-Hyo (Dept. of Advanced Materials Science and Engineering, Mokpo National University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.19, no.4, 2009 , pp. 202-207 More about this Journal
Abstract
Nanocomposite formation of metal-metal oxide systems by mechanical alloying (MA) has been investigated at room temperature. The systems we chose are the $Fe_3O_4$-M (M = AI, Ti), where pure metals are used as reducing agent. It is found that $Fe/Al_2O_3$ and $Fe/TiO_2$ nanocomposite powders in which $Al_2O_3$ and $TiO_2$ are dispersed in ${\alpha}$-Fe matrix with nano-sized grains are obtained by MA of $Fe_3O_4$ with Al and Ti for 25 and 75 hours, respectively. It is suggested that the shorter MA time for the nanocomposite formation in $Fe/Al_2O_3$ is due to a large negative heat associated with the chemical reduction of magnetite by aluminum. X-ray diffraction results show that the average grain size of ${\alpha}$-Fe in $Fe/TiO_2$ nanocomposite powders is in the range of 30 nm. The change in magnetic properties also reflects the details of the solid-state reduction of magnetite by pure metals during MA.
Keywords
Mechanical alloying; Magnetite; Intermediate phases of $FeAl_2O_4$ and $FeTi_3O_{10}$; Metal-metal oxide nanocomposite; Large negative reaction heat;
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1 C.C. Koch, O.B. Cavin, C.G. Mckamey and J.O. Scarbrough, "Preparation of amorphous $Ni_{60}Nb_{40}$ by mechanical alloying", Appl. Phys. Lett. 43 (1983) 1017   DOI
2 J. Liao and M. Senna, "Formation and properties of amorphous magnesium silicates", Mat. Sci. Forum 88 (1992) 753   DOI
3 K. Tokumitsu, "Mechanochemical reaction between metals and hydrocarbons", Mat. Sci. Forum 88 (1992) 715   DOI
4 C.H. Lee, S.H. Lee, S.Y. Chun, S.J. Lee and Y.S. Kwon, "Nanocomposite formation in the $Fe_2O_3-M$ (M = Al, Ti, Zn, Cu) system by mechanical alloying", Mat. Sci. Forum 449 (2004) 253   DOI
5 C.H. Lee, S.H. Lee, S.Y. Chun, S.J. Lee and J.S. Kim, "Mechanical alloying effect of hematite and graphite", Mat. Sci. Forum 449 (2004) 257   DOI
6 R.B. Schwarz and W.L. Johnson, "Formation of an amorphous alloy by solid state reaction of the pure polycrystalline metals", Phys. Rev. Letters 51 (1983) 415   DOI
7 H.J. Fecht, E. Hellstern, Z. Fu and W.L. Johnson, "Nanocrystalline metals prepared by high-energy ball milling", Metal. Trans. 21 (1990) 2333   DOI
8 T. Ban, K. Okada, T. Hayashi and N. Otsuka, "Mechanochemical effects for some $Al_2O_3$ powders of dry grinding", J. Mat. Sci. 27 (1992) 465   DOI
9 O. Kubaschewski and C.B. Alcock, Metallurgical Thermochemistry, Pergamon International Library (1983) 268
10 W.H. Hall, "Characterization of crystal size and strain by X-ray diffraction", J. Inst. Met. 75 (1948) 1127
11 C.H. Lee, "Formation of nanocrystalline $MoSi_2$ compound subjected to mechanical alloying", J. Ceramic Processing Research 9 (2008) 321   ScienceOn
12 R. Schwarz and C.C. Koch, "Formation of amorphous alloys by the mechanical alloying of crystalline powders of pure metals and powders of intermetallics", Appl. Phys. Lett. 49 (1986) 146   DOI
13 K. Suzuki, Y. Homma, K. Suzuki and M. Misawa, "Structural characterization of Ni-V amorphous alloys prepared by mechanical alloying", Mat. Sci. Eng. A134 (1991) 987   DOI   ScienceOn
14 U. Mizutani and C.H. Lee, "Effect of mechanical alloying beyond the completion of glass formation for Ni-Zr alloy powders", J. Mat. Sci. 25 (1990) 399   DOI
15 X.C. Kou, W.J. Qiang, H. Kronmuller and L. Shultz, "Coercivity of Sm-Fe-N ferromagnets produced by the mechanical alloying technique", J. Appl. Phys. 74 (1993) 6791   DOI   ScienceOn
16 T. Fukunaga, N. Kuroda, C.H. Lee, T. Koyano and U. Mizutani, "Nitrogen induced amorphization observed by X-ray and neutron diffractions in the immiscible V-Cu system", J. Non-Cryst. Solids 176 (1994) 98   DOI   ScienceOn
17 G.H. Li and Q.P. Kong, "Processing and thermal stability of $nano-Mg_2Si$ intermetallic compound", Scripta Metallurgica et Materialia 32 (1995) 1435   DOI   ScienceOn
18 J. Eckert and L. Schultz, "Glass formation and extended solubilities in mechanically alloyed cobalt-transition metal alloys", J. Less-Common Metals 166 (1990) 293   DOI   ScienceOn
19 C.H. Lee, S.H. Lee, S.Y. Chun and S.J. Lee, "Fabrication of $Mg_2Si$ thermoelectric materials by mechanical alloying and spark-plasma sintering process", J. of Nanosci. Nanotechnol. 6 (2006) 3429   DOI   ScienceOn
20 H. Izumi, K. Izumi and K. Kudaka, "Mechanochemical reduction reaction of titanium oxides by calcium", J. Jpn. Soc. Powder and Powder Metallurgy 48 (2001) 1051   DOI
21 K. Schnitzke, L. Schultz, J. Wecker and M. Katter, "High coercivity in Sm2Fe17Nx magnets", Appl. Phys. Lett. 57 (1990) 2853   DOI