Hydrogenation Properties of Mg-Co and Its Related Alloys


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Novel Mg-Co binary alloys with BCC (body-centered cubic) structure have been successfully synthesized by means of mechanical alloying technique. The formation of BCC structure was confirmed by X-ray diffraction and transmission electron microscopy. Mg-Co alloys were found in the range of Co concentration between 37 and 80 atomic %. All the Mg-Co alloys synthesized absorbed hydrogen below 373K. The maximum hydrogen capacity of these alloys reaches 2.7 mass %. However, desorption of hydrogen at 373 K has not been observed yet. Mg- Co-X (X = B and Ni) ternary alloys with BCC structure have also been synthesized. The lattice parameter of both alloys is lower than that of Mg-Co binary alloys, meanwhile the maximum hydrogen content of both alloys also decreased.



Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie




Y. Zhang et al., "Hydrogenation Properties of Mg-Co and Its Related Alloys", Materials Science Forum, Vols. 475-479, pp. 2453-2456, 2005

Online since:

January 2005




[1] J. J. Reilly and R. H. Wiswall: Inorg. Chem. Vol. 7 (1968), p.2254.

[2] Q. M. Yang, Y. Q. Lei, C. P. Chen, J. Wu and Q. D. Wang: Z. Phys. Chem. Vol. 183 (1994), p.141.

[3] S. Orimo, H. Fujii, K. Ikeda, Y. Fujikawa and Y. Kitano: J. Alloys Comp Vol. 253-254 (1997), p.94.

[4] Orimo, S., Fujii, H. and Ikeda, K.: Acta Mater. Vol. 331 (1997), p.45.

[5] A. J. Maeland, G. G. Libowitz, J. F. Lynch and G. Rak: J. Less-Common Metals Vol. 104 (1984), p.133.

DOI: https://doi.org/10.1016/0022-5088(84)90449-1

[6] A. J. Maeland, G. G. Libowitz, J. F. Lynch: J. Less-Common Metals Vol. 104 (1984), p.361.

[7] J. F. Lynch, A. J. Maeland and G. G. Libowitz: Z. Phys. Chem. Vol. 145 (1985), p.305.

[8] H. Iba and E. Akiba: J. Alloys Comp Vol. 253-254 (1997), p.21.

[9] E. Akiba and H. Iba: Intermetallics Vol. 6 (1998), p.461.

[10] E. Akiba and M. Okada: MRS Bulletin Vol. 27 (2002), p.699.

[11] T. Kuji, S. Nakayama, N. Hanzawa and Y. Tabira: J. Alloys Comp Vol. 356-357 (2003), p.456.

[12] Y. Tsushio, S.J. Choi, H. Enoki and E. Akiba: Collected Abstracts of the 2002 Spring Meeting of the Japan Institute of Metals, (2002), p.499.

[13] F. Izumi and T. Ikeda: Mater. Sci. Forum Vol. 321-324 (2000), pp.198-0. 0 0. 5 1. 0 1. 5 2. 0 2. 5 3. 0 1E-4 1E-3 0. 01 0. 1 1 10 Desorption absorption Mg60Co40 P-C isotherm for the 1st cycle T = 373K Pressure (MPa) H2 (wt. %).