Influence of Low Ti-Element Additions on The Microstructure, Melting Properties and Creep Behavior of Sn-Ag-Cu Lead Free Solders
Journal Title: JOURNAL OF ADVANCES IN PHYSICS - Year 0, Vol 14, Issue 3
Abstract
Sn-3.5wt.%Ag-0.5wt.%Cu is one of the alloys considered for replacing SnPb solder alloys in electronic ambiance. In the present study, the effect of minor additions of Ti (0.25, 0.5, 1.0 wt.%) on the microstructure, creep and thermal properties of Sn-3.5wt.%Ag-0.5wt.%Cu lead free solder alloy are investigated by means of scanning electron microscopy (SEM), x-ray diffraction (XRD), creep tests and differential scanning calorimetry (DSC) thermal tests. Results showed that the addition of different wt.% of Ti refined the grain size of the solder alloys. The microstructure parameters obtained from x-ray analysis represented by lattice parameters (a,c), axial ratio (c/a), residual strains (?a/a? & ?c/c?), peak height intensities and crystallite size of some crystallographic planes were found to be sensitive to Ti - additions, applied stresses and working temperatures. The morphological studies using SEM showed refinements of Ag3Sn, Cu6Sn5 and Ti2Sn3 (IMCs) in ?-Sn matrix. Thermal analysis showed that Ti - additions slightly affect melting temperature and pastry range. In terms of creep behavior the addition of 1wt.%Ti gave the highest creep resistance with respect to the others, due to fine dispersion of IMCs. The stress exponents (n) and the activation energies (Q) indicated that the dominant creep mechanism is dislocation climb over all temperature ranges
Authors and Affiliations
Amal Mohamed Yassin, Reda Ismail Afify, Berlent Khalifa
Keywords
Related Articles
- EP ID EP653439
- DOI 10.24297/jap.v14i3.7834
- Views 36
- Downloads 0
Rapidity Distribution of Charged Pions From Pb+Pb and Au+Au Central Collisions
Rapidity distributions for charged pions produced from central collisions Pb+Pb and Au+Au at (b ≤ 3.4 fm.) in range of energy 2 GeV up to = 200 GeV are investigated. The experimental results are studied in terms...
Structural, Optical and Magnetic Investigation of Ni, Co and Mn doped SnO2 Nano particles Synthesized by Chemical Co-precipitation.
Pure and transition metal dopednano-crystalline Sn1-xTMxO2 (x = 0.0, 0.05, TM = Ni, Co and Mn)were synthesized in aqueous solution by chemical Co-precipitation technique. X- ray diffraction (XRD), high resolution transmi...
Similarity in Analytic Behavior Intermediate Radial States of the Hydrogen Atom & Production of Radionuclides and Gamma Decay
The purpose of this paper is to show that analytic behavior of ground and intermediate states of the Hydrogen atom is similar to Gamma decay in molybdenum-99 (99mTc → 99Tc + γ).
Diurnal and Seasonal Variations of Equivalent Slab thickness over Low and Mid Latitude Regions
The equivalent slab-thickness is very important in the study of the complex dynamics of the ionosphere as a result of its ability to determine the skewness of the ionospheric electron density profile. This study in...
Linear Operator and Spontaneous Breaking in PT -Symmetry
We study spectral behaviour of linear operator using matrix diagonalisation method and notice that spectral breaking is an inherent behaviour in PT -symmetry .