The Role of Valence Electron Concentration on the Structure and Properties of Rapidly Solidified Sn-Ag Binary Alloys

作     者：M. Kamal A. B. El-Bediwi T. El-Ashram M. E. Dorgham 

作者机构：Metal Physics Lab. Physics Department Faculty of Science Mansoura University Mansoura Egypt Physics Department Faculty of Science Port Said University Port Said Egypt 

出 版 物：《Materials Sciences and Applications》 (材料科学与应用期刊（英文）)

年 卷 期：2012年第3卷第3期

页      面：179-184页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Alloys Rapid Solidification Valence Electron Concentration Resistivity Young’s Modulus Fermi Energy Brillouin Zone 

摘      要：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 2kF 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.