Thermal, electrical, microstructure and microhardness properties of the eutectic Sn-3.5wt.%Ag alloy


Meydaneri F., Saatci B., Ozdemir M.

KOVOVE MATERIALY-METALLIC MATERIALS, cilt.51, ss.173-181, 2013 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 51 Konu: 3
  • Basım Tarihi: 2013
  • Doi Numarası: 10.4149/km_2013_3_173
  • Dergi Adı: KOVOVE MATERIALY-METALLIC MATERIALS
  • Sayfa Sayısı: ss.173-181

Özet

The variation of thermal conductivity with temperature for Sn-3.5wt.%Ag eutectic alloy was measured with a radial heat flow apparatus. The thermal conductivity of the solid phase and temperature coefficient were also found to be 84.60 +/- 0.09 W K-1 m(-1) and 5.92 x 10(-4) K-1, respectively. The values of enthalpy of fusion (Delta H) and the specific heat (C-p) were also determined by differential scanning calorimeter (DSC) from heat flow curves during the transformation from eutectic solid to eutectic liquid. The variation of electrical conductivity with temperature for Sn-3.5wt.%Ag eutectic alloy was determined from the Wiedemann-Franz law by using the measured values of thermal conductivity. The microhardness of Sn-3.5wt.%Ag eutectic alloy was measured at approximately 5 different points with Vickers microhardness device. The microstructure of Sn-3.5wt.%Ag eutectic alloy was investigated by using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis.