Thermodynamic Aspects of Nanostructured CoAl Intermetallic Compound during Mechanical Alloying

Abstract

Abstract: The nanostructured CoAl intermetallic compound was produced by mechanical alloying (MA) of the Co₅₀Al₅₀ elemental powder mixture in a planetary high energy ball mill. The ordered B2-CoAl structure with the grain size of about 6 nm was formed via a gradual reaction after 10 h of MA. A thermodynamic analysis of the process was also done. The results showed that the intermetallic compound of CoAl had the minimum Gibbs free energy compared to solid solution and amorphous states indicating the initial MA product was the most stable phase in the Co-Al system which was changed to a partially disordered structure with a steady long-range order of 0.82 at further milling. This amount of disordering caused the enthalpy of final product to show an increase of about 5.1 kJ·mol^-1. Calculation of enthalpy related to the triple defect formation revealed that the enthalpy required for Al anti-sites formation was about 3 times greater than that for Co anti-sites formation.

Key words: Intermetallics, CoAl, Nanostructured materials, Mechanical alloying, Thermodynamics

S.N. Hosseini, T. Mousavi, F. Karimzadehy and M.H. Enayati. Thermodynamic Aspects of Nanostructured CoAl Intermetallic Compound during Mechanical Alloying[J]. J Mater Sci Technol, 2011, 27(7): 601-606.

References

[1 ] Y. Takano: J. Am. Ceram. Soc., 2001, 84, 2445.

[2 ] R. Nakamura, K. Takasawa, Y. Yamazaki and Y. Iijima: Intermetallics, 2002, 10, 195.

[3 ] H. Bakker, G.F. Zhou and H. Yang: Progr. Mater. Sci., 1995, 39, 159.

[4 ] N.K. Mukhopadhyay, D. Mukherjee, S. Dutta, R. Manna, D.H. Kim and I. Manna: J. Alloy. Compd., 2008, 457, 177.

[5 ] G. Borzone, R. Raggio and R. Ferro: J. Mining Metall. B, 2002, 38, 249.

[6 ] P. Nandi, P.M.G. Nambissan and I. Manna: J. Alloy. Compd., 2004, 377, 179.

[7 ] V.K. Portnoi, K.V. Tretyakov and V.I. Fadeeva: Inorg. Mater., 2004, 40, 937.

[8 ] C. Suryanarayana: J. Prog. Mater. Sci., 2001, 46, 1.

[9 ] G.K. Williamson and W.H. Hall: Acta Metall., 1953, 1, 22.

[10] A.A. Karimpoor, U. Erb, K.T. Aust and G. Palumbo: Scripta Mater., 2003, 49, 651.

[11] V. Yamakov, D. Wolf, S.R. Phillpot and H. Gleiter: Scripta Mater., 2002, 50, 5005.

[12] G.E. Dieter: Mechanical Metallurgy, 3rd edn, McGraw-Hill, 1976.

[13] T. Mousavi, F. Karimzadeh and M.H. Abbasi: Mater. Sci. Eng. A, 2008, 487, 46.

[14] J.R. Groza, J.F. Shackelford, E.J. Lavernia and M.T. Powers: Materials Processing Hand Book, Taylor and Francis, 2007.

[15] H. Mehrer: Di®usion in Solids: Fundamentals, Methods, Materials, Di®usion Controlled Processes, Springer, 2007.

[16] H. Bakker, I.W. Modder and M.J. Kuin: Intermetallics, 1997, 5, 535.

[17] N. Gao and W.S. Lai: J. Phys.: Condens. Matter., 2007, 19, 1.

[18] L.M. Di, H. Bakker, P. Barczy and Z. Gacsi: Acta Metall. Mater., 1993, 41, 2923.

[19] J. Sheng: J. Mater. Sci. Lett., 2002, 21, 1319.

[20] E. Ma and M. Atzmon: J. Alloy. Compd., 1993, 194, 235.

[21] X. Cheng, Y. Ouyang, H. Shi, X. Zhong, Y. Du and X. Tao: J. Alloy. Compd., 2006, 421, 314.

[22] G. Ran, J.E. Zhou, S. Xi and P. Li: Mater. Sci. Eng. A, 2006, 416, 45.

[23] S. Xi, K. Zuo, X. Li, G. Ran and J. Zhou: Acta Mater., 2008, 56, 6050.

[24] R.A. Varin, T. Czujko and J. Mizera: J. Alloy. Compd., 2003, 350, 332.

[25] G.J. Van der Kolk, A.R. Miedema and A.K. Niessen: J. Less-Common Met., 1988, 145, 1.

[26] P.I. Loe® and A.W. Weeber: J. Less-Common Met., 1988, 140, 299.

[27] A.R. Miedema, F.R. de Boer and R. Boom: Calphad, 1977, 1, 341.

[28] A.R. Miedema: J. Less-Common Met., 1975, 41, 283.

[29] A.R. Miedema: J. Less-Common Met., 1976, 46, 67.

[30] A.W. Weeber: J. Phys. F: Met. Phys., 1987, 17, 809.

[31] L.C. Zhang, K.B. Kim, P. Yu, W.Y. Zhang, U. Kunz and J. Eckert: J. Alloy. Compd., 2007, 428, 157.

[32] E.A. Brands: Smithells Metals Reference Book, 6th edn, Butterworths, London, 1983.

[33] G.F. Zhou and H. Bakker: Mater. Trans., 1995, 36, 329.

[34] O. Kubaschewski and C.B. Alcock: Metallurgical Thermochemistry, 5th edn, Pergamon Press, 1979.

[35] D.L. Beke, H. Bakker and P.I. Loeff: Acta Metall. Mater., 1991, 39, 1267.

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