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The Role of Valence Electron Concentration on the Structure and Properties of Rapidly Solidified Sn-Ag Binary Alloys
Metal Physics Lab., Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
Metal Physics Lab., Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
Physics Department, Faculty of Science, Port Said University, Port Said, Egypt
Metal Physics Lab., Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
- 1 Metal Physics Lab., Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
- 2 Metal Physics Lab., Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
- 3 Physics Department, Faculty of Science, Port Said University, Port Said, Egypt
- 4 Metal Physics Lab., Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
Materials Sciences and Applications·Volume 03 (2012)·Pages 179–184·Published 23 March 2012·DOI10.4236/msa.2012.33028
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Abstract
A group of binary Sn-xAg alloys (x = 0.5, 1.5, 2.5, 3.5, 4.5, 5.5 and 6.5 wt%) has been produced by a single copper roller melt-spinning technique. In this study the interaction between Fermi sphere and Brillouin zone and Hume-Rothery condition of phase stability have been verified. It is found that by increasing valence electron concentration VEC the diameter of Fermi sphere 2 k F increases which leads to the increase in the diameter of Brillouin zone which arises from the decrease in volume of the unit cell. It is found that the electrical resistivity increases by increasing VEC due to the decrease in relaxation time τ with increasing VEC. Also it has been confirmed that the correlation between Young’s modulus and the axial ratio c/a of β -Sn unit cell.
KeywordsAlloysRapid SolidificationValence Electron ConcentrationResistivityYoung’s ModulusFermi EnergyBrillouin Zone
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