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Influence of the Concentration of Tellurium in Tlie Hardening Mechanism of the Lead-Tellurium Alloys for Battery Grids

Abdellah Aguizir| Elhassan Zantalla | Youssef Ait Yassine | Najim Selhaoui | Lahcen Bouirden

Laboratoire Dc Tliermodynamique et Energétique, Faculté des Sciences, Agadir, BP 8106, Morocco

Received:

29 November 2016

| |

Accepted:

22 December 2016

| | Citation

acsm4012p121-web.pdf

OPEN ACCESS

Abstract:

This work is dedicated to the influence of the concentration of tellurium on structural hardening mechanisms binary alloys PbTe, in the following amounts by weight Pb0,003wt%Te; Pb0,005wt%Te and Pb0,0062wt%Te that leads to solid solutions supersaturated in Tellurium .The equilibration of supersatured alloys has been followed by different techniques, the hardness, microhardness measurements, optical , electron microscopy and microanalysis EDAX . Two structural states arc considered: as-cast alloys and rehomogeneization. The explored temperatures are 20° and 80°C The aging of lead-tellurium alloys is characterized by a continuous precipitation and discontinuous transformation. As for their overaging they arc concerned by a discontinuous lamellar precipitation localized around the grain boundaries, we note that the maximum hardness obtained docs not exceed 8 Hv whatever the structural state of the alloy studied.

1. Introduction

2. Conditions Experimentales

3. Results and Discussion

4. Conclusion

References

[1] A.Aguizir, E. Zantalla, Y. Ait Yassine et al., Ann. Chim-Sci. Mat. 36 (2011) 99-110.

[2] U.Kattner, H.LLukas and G.Petzow, CALPHAD XIII,N °.2, pp. $103-116,1986$.

[3] J.P. Hilger, A. Boulahrouf, Mater. Charact. 24 (1990) 159-167.

[4] Metals Handbook, $g^{\text {cme }}$ édition, A.S.M, 7(1973) 297-304.

[5] L. Bouirden, Thèse de Doctorat d'Etat. Uuniversité de Nancy France (1990).

[6] L. Bouirden, J.P. Hilger, J. Hertz, J. Power sources 33 (1991) 27-50.

[7] J. P. Hilger, L. Bouirden, J. Alloy Compd. $236(1996) 224-228$.

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Influence of the Concentration of Tellurium in Tlie Hardening Mechanism of the Lead-Tellurium Alloys for Battery Grids