Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-26T01:29:18.341Z Has data issue: false hasContentIssue false

On the atomic interdiffusion in Mg–{Ce, Nd, Zn} and Zn–{Ce, Nd} binary systems

Published online by Cambridge University Press:  25 July 2014

Ahmad Mostafa
Affiliation:
Mechanical and Industrial Engineering Department, Concordia University, Montreal, Quebec, Canada H3G 1M8
Mamoun Medraj*
Affiliation:
Mechanical and Industrial Engineering Department, Concordia University, Montreal, Quebec, Canada H3G 1M8
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

Binary interdiffusion data as function of composition in the Mg–{Ce, Nd, Zn} and Zn–{Ce, Nd} systems were obtained experimentally using solid–solid diffusion couples. For the studied systems, all intermetallic compounds were produced, based on the equilibrium phase diagrams, eliminating the problem of missing compounds in the diffusion couples found in the literature. The composition profiles were obtained using wavelength dispersive spectroscopy line-scans across diffusion couples. The composition-dependent diffusion coefficient at each interface was determined using Boltzmann–Matano analysis. For the available literature data for some of the compounds in the Mg–{Ce, Nd, Zn} systems, the calculated interdiffusion coefficients were in good agreement. No diffusion data regarding Zn–{Ce, Nd} systems could be found in the literature. The activation energy and the preexponential factor of the growth of the Mg–{Ce, Nd, Zn} compounds were determined using Arrhenius equation. The activation energies of the growth of the Mg–Ce compounds showed relatively higher values than those of Mg–Nd and Mg–Zn compounds.

Type
Articles
Copyright
Copyright © Materials Research Society 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Ghosh, P., Mezbahul-Islam, M., and Medraj, M.: Critical assessment and thermodynamic modeling of Mg–Zn, Mg–Sn, Sn–Zn and Mg–Sn–Zn systems. Calphad 36, 2843 (2012).CrossRefGoogle Scholar
Pahlman, J. and Smith, J.: Thermodynamics of formation of compounds in the Ce-Mg, Nd-Mg, Gd-Mg, Dy-Mg, Er-Mg, and Lu-Mg binary systems in the temperature range 650 to 930K. Metall. Mater. Trans. B 3, 24232432 (1972).CrossRefGoogle Scholar
Ferro, R., Saccone, A., and Borzone, G.: Rare earth metals in light alloys. J. Rare Earths 15, 4561 (1997).Google Scholar
Tao, X., Ouyang, Y., Liu, H., Feng, Y., Du, Y., He, Y., and Jin, Z.: Phase stability of magnesium-rare earth binary systems from first-principles calculations. J. Alloys Compd. 509, 68996907 (2011).CrossRefGoogle Scholar
Zhu, X. and O'Nions, R.: Monazite chemical composition: Some implications for monazite geochronology. Contrib. Mineral. Petrol. 137, 351363 (1999).CrossRefGoogle Scholar
Stanford, N. and Phelan, D.: The formation of randomly textured magnesium alloy sheet through rapid solidification. Acta Mater. 58, 36423654 (2010).CrossRefGoogle Scholar
Matano, C.: On the relation between the diffusion-coefficients and concentrations of solid metals. Jpn. J. Appl. Phys. 8, 109113 (1933).Google Scholar
Shewmon, P.: Diffusion in Solids, 2 nd ed.; McGraw-Hill: New York, 1963.Google Scholar
Callister, W. and Rethwisch, D.: Materials Science and Engineering: An Introduction, 7th ed. (John Wiley & Sons, Inc., New York, NY, 2007).Google Scholar
Lal, K. and Levy, V.: Study of the diffusion of cerium and lanthanum in magnesium. C.R. Acad. Sci. Ser. C: Chem. 262, 107109 (1966).Google Scholar
Xu, Y., Chumbley, L., and Laabs, F.: Liquid metal extraction of Nd from NdFeB magnet scrap. J. Mater. Res. 15, 22962304 (2000).CrossRefGoogle Scholar
Xu, Y., Chumbley, L., Weigelt, G., and Laabs, F.: Analysis of interdiffusion of Dy, Nd, and Pr in Mg. J. Mater. Res. 16, 32873292 (2001).CrossRefGoogle Scholar
Brennan, S., Bermudez, K., and Sohn, Y.: Intermetallic growth and interdiffusion in the Mg-Nd system. In 9th Int. Conf. on Mg Alloys and their Applications, Vancouver, Canada, 2012; Pool, W. and Kainer, K., ed, pp. 417421.Google Scholar
Kulkarni, K. and Luo, A.: Interdiffusion and phase growth kinetics in magnesium-aluminum binary system. J. Phase Equilib. Diffus. 112, 104115 (2013).CrossRefGoogle Scholar
Sakakura, T. and Sugino, S.: Fundamental study on interdiffusion in h.c.p. alloys. Part 2. Magnesium-zinc system. Memories Suzuka Coll. Technol. 10, 141153 (1977).Google Scholar
Brennan, S., Bermudez, K., Kulkarni, N., and Sohn, Y.: Diffusion Couple Investigation of the Mg-Zn System (John Wiley & Sons, Inc., Hoboken, NJ, 2012); pp. 323327.Google Scholar
Du, Y., Zhang, L-J., Cui, S-L., Zhao, D., Liu, D., Zhang, W-B., Sun, W-H., and Jie, W-Q.: Atomic mobilities and diffusivities in Al alloys. Sci. China, Tech. Sci. 55, 123 (2012).CrossRefGoogle Scholar
Mehrer, H.: Diffusion in Solids: Fundamentals, Methods, Materials, Diffusion-Controlled Processes (Springer-Verlag, Berlin, Heidelberg, 2007).CrossRefGoogle Scholar
Wallach, E.: Interdiffusion coefficients and the calculation of phase widths in bi-metallic diffusion couples. Scr. Metall. 11, 361366 (1977).CrossRefGoogle Scholar
Okamoto, H.: Ce-Mg (cerium-magnesium). J. Phase Equilib. Diffus. 32, 265266 (2011).CrossRefGoogle Scholar
Kevorkov, D. and Pekguleryuz, M.: Experimental study of the Ce-Mg-Zn phase diagram at 350°C via diffusion couple techniques. J. Alloys Compd. 478, 427436 (2009).CrossRefGoogle Scholar
Okamoto, H.: Supplemental literature review of binary phase diagrams: Cs-In, Cs-K, Cs-Rb, Eu-In, Ho-Mn, K-Rb, Li-Mg, Mg-Nd, Mg-Zn, Mn-Sm, O-Sb, and Si-Sr. J. Phase Equilib. Diffus. 34, 251263 (2013).CrossRefGoogle Scholar
Huber, L., Elfimov, I., Rottler, J., and Militzer, M.: Ab initio calculations of rare-earth diffusion in magnesium. Phys. Rev. B 85, 144301144307 (2012).CrossRefGoogle Scholar
Philibert, J.: Atom Movements Diffusion and Mass Transport in Solids (EDP Sciences, France, 1991).Google Scholar
Green, A., Humphreys, J., Mackenzie, R., and Jones, I.G.: Atomic diffusion in metals and alloys. Materials Science on CD-ROM; The University of Liverpool, Liverpool, UK, 2000.Google Scholar
Dybkov, V.: Solid state growth kinetics of the same chemical compound layer in various diffusion couples. J. Phys. Chem. Solids 47, 735740 (1986).CrossRefGoogle Scholar
Kirkendall, E.: Diffusion of zinc in alpha brass. Trans. AIME 147, 104110 (1942).Google Scholar
Okamoto, H.: Ce-Zn (cerium-zinc). J. Phase Equilib. Diffus. 34, 170170 (2013).CrossRefGoogle Scholar
Dybkov, V.: Phase formation and diffusion in binary systems: Real facts and misleading views. In Proceedings of Materials Science and Technology MS&T-2007 Conference, Detroit, 2007; pp. 525536.Google Scholar
Dybkov, V.: Interfacial interaction and diffusion in binary systems. Defect Diffus. Forum 263, 7580 (2007).CrossRefGoogle Scholar
van-Loo, F. and Rieck, G.: Diffusion in the titanium-aluminium system I. Interdiffusion between solid Al and Ti or Ti-Al alloys. Acta Metall. 21, 6171 (1973).CrossRefGoogle Scholar
Wöhlert, S. and Bormann, R.: Phase selection governed by different growth velocities in the early stages of the Ti/Al phase reaction. J. Appl. Phys. 85, 825832 (1999).CrossRefGoogle Scholar
Okamoto, H.: Nd-Zn (neodymium-zinc). J. Phase Equilib. Diffus. 33, 81 (2012).CrossRefGoogle Scholar