Investigation of the Particle Size Effect on the Peritectic Melting of FeSn₂ Particles in FeSn₂-FeSn Nanocomposites

Abstract:

The particle size effect on the peritectic melting of FeSn2 particles in FeSn-FeSn2 nanocomposites was studied using differential scanning calorimetry and X-ray diffraction. FeSn-10 wt.% FeSn2 compounds, mechanically milled for 30 min and slowly heated in a differential scanning calorimeter, showed incongruent melting at 680 K. Although FeSn2 grains grew from 10 to 40 nm upon heating before peritectic melting set in, the melting temperature was more than 100 K lower than the equilibrium value. A small latent heat during peritectic melting and a large amount of interfacial energy of FeSn-FeSn2 nanocomposites are held responsible for this large particle size effect. Grain growth is hardly possible in the case of rapid local heating during mechanical milling. Therefore, a decrease in the peritectic melting temperature is even expected to be substantially larger.

• Periodical: Solid State Phenomena (Volume 118)
• Pages: 651-654
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.118.651
• Online since: December 2006
• Authors: Young Soon Kwon, Pyuck Pa Choi, Ji Soon Kim, Dae Hwan Kwon, K.B. Gerasimov
• Keywords: Incongruent Melting, Intermetallic, Mechanical Alloying (MA), Particle Size Effect

References

[1] P. Pawlow: Z. Phys. Chem. Vol. 65 (1990), p.545.

[2] R. Kofman, P. Cheyssac and R. Garrigos: Phase Transitions Vol. 24-26 (1990), p.283.

[3] M. Takagi: J. Phys. Soc. Jpn. Vol. 9 (1954), p.359.

[4] K. Chattopadhyay and R. Goswami: Progress Mat. Sci. Vol. 42 (1997), p.287.

[5] Y. S. Kwon, K. B. Gerasimov, O. I. Lomovsky and S. V. Pavlov: J. Alloys Comp. Vol. 353 (2003), p.194.

[6] Y. S. Kwon, K. B. Gerasimov, S. S. Avramchuck and J. S. Kim: J. Metastable and Nanocryst. Mater. Vol. 15-16 (2003), p.301.

[7] M. D. Demetriou, N. M. Ghoniem and A. S. Lavine: Acta Mater. Vol. 50 (2002), p.4995.

[8] M. Yurechko, A. Fattah, T. Velikanova and B. Grushko B: J. Alloys Comp. Vol. 329 (2001), p.173.

[9] K. C. Hari Kumar, P. Wollants and L. Delaey: Calphad Vol. 20 (1996), p.139.

[10] M. K. Datta, S. K. Pabi and B. S. Murty: J. Appl. Phys. Vol. 87 (2000), p.8393.

[11] M. K. Datta, S. K. Pabi and B. S. Murty: Mater. Sci. Eng. A Vol. 284A (2000), p.219.

[12] K. Lu: Mater. Sci. Eng. R Vol. 16R (1996), p.289.

[13] D. R. Maurice, T. H. Courtney: Metall. Trans. A Vol. 21 A (1990), p.289.