Melting Process of the Sn-45 wt.% In and Sn-77 wt.% In Alloys as Viewed by Positron Annihilation

• Authors: W. Rudzińska , M. Szuszkiewicz
• Languages of publication: EN

Abstracts

EN

The temperature dependences of the positron annihilation parameters F and R were determined for Sn-45 wt.% In and Sn-77 wt.% In alloys. The obtained results enabled to verify the vacancy and the quasicrystalline models of the melting process. It was found that for metals transforming into the liquid state from the structures different than the close packed structure, the melting transition are hardly explainable in terms of the vacancy model of melting. The strong trapping of positrons in metallic liquids is an indication of the presence of microvoids (vacancy clusters) or microcrystals containing defects more immense than vacancies. The share of these positron trapping centers in the volume of metallic liquids is constant or decreases with increasing temperature. The obtained results demonstrate the particular applicability of the positron annihilation method for studies of defect kinetics in metallic liquids.

Keywords

EN

78.70.Bj

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)

• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 5
• Pages: 701-708

Dates

published

2006-11

received

2006-06-05

Contributors

author

W. Rudzińska

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

author

M. Szuszkiewicz

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

References

• 1. N.H. March, Liquid Metals, Pergamon Press, Oxford 1968
• 2. Ya.I. Dutczak, Radiography of Melting Metals, Izd. Visca Skola, Lvov 1997 (in Russian)
• 3. S. Pal, P.K. Sharma, Phys. Status Solidi A, 23, 361, 1967
• 4. F.D. Stacey, R.D. Irvine, Aust. J. Phys., 30, 641, 1977
• 5. J.L. Tallon, Phys. Rev. B, 22, 453, 1980
• 6. D.R. Nelson, B.J. Halperin, Phys Rev. B, 19, 2457, 1979
• 7. Ya.R. Frenkel, Kinetic Theory of Liquids, Nauka, Moskva 1945 (in Russian)
• 8. H. Eyring, J. Mu-Shik, Significant Liquid Structures, Wiley, New York 1969
• 9. T. Górecki, Z. Metallkunde, 65, 426, 1974
• 10. V. Ladianow, V. Arkharow, J. Novokhatskii, V. Kisunko, Fiz. Metallow i Metallovedenie, 34, 1060, 1972
• 11. S. Nanao, K. Kuribayashi, S. Tanigawa, D. Doyama, J. Phys. F, Met. Phys., 7, 1403, 1977
• 12. M.J. Fluss, L.C. Smedskjaer, B. Chakraborty, M.K. Chason, J. Phys. F, Met. Phys., 13, 817, 1983
• 13. G. Dlubek, O. Brummer, N. Meyendorf, Appl. Phys., 13, 67, 1977
• 14. W. Triftshauser, Phys. Rev. B, 12, 4634, 1975
• 15. N. Shah, A.L. Catz, Phys. Rev. B, 30, 2498, 1984
• 16. W. Rudzińska, S. Chabik, C. Szymański, B. Rozenfeld, Cryst. Res. Technol., 22, 11, 1987
• 17. K. Lynn, in: Enrico Fermi Int. School of Physics on Positron Spectroscopy of Solids, Varenna 1993, Eds. A. Dupasquier, A.P. Mills, Jr., IOS, Amsterdam 1995
• 18. C. Szymański, S. Chabik, J. Pajak, B. Rozenfeld, Phys. Status Solidi A, 60, 375, 1980
• 19. S. Chabik, W. Rudzińska, M. Szuszkiewicz, C. Szymański, Acta Phys. Pol. A, 88, 261, 1993
• 20. T. Górecki, High Temperatures - High Pressures, 15, 157, 1983
• 21. M. Kostrzewa, T. Górecki, Acustica, 77, 293, 1993
• 22. S. Chabik, W. Rudzińska, M. Szuszkiewicz, C. Szymański, Acta Phys. Pol. A, 88, 97, 1995
• 23. S. Chabik, W. Rudzińska, M. Szuszkiewicz, C. Szymański, in: Proc. 27th Sem. Positron Annihilation, Ed. S. Chabik, University of Opole, University of Wroclaw, Opole 1995, p. 31
• 24. G.C. Vezzoli, High Temperatures - High Pressures, 20, 679, 1988

Identifiers

DOI

10.12693/APhysPolA.110.701