2010
DOI: 10.1007/s11664-010-1425-8
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Dependence of Electrical Resistivity on Temperature and Sn Content in Pb-Sn Solders

Abstract: Pb (100Àx) -Sn x solders (x = 5 wt.%, 10 wt.%, 20 wt.%, 35 wt.%, 50 wt.%, 60 wt.%, 61.9 wt.%, and 95 wt.%) were directionally solidified upward with a constant growth rate (V = 37.4 lm/s) in a temperature gradient (G = 4.8 K/mm) in a Bridgman-type growth apparatus. The variations of electrical resistivity (q) with temperature in the range of 323 K to 423 K for the directionally solidified Pb-Sn solders were measured. The present measurements indicate that the electrical resistivity of the directionally solidif… Show more

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Cited by 26 publications
(8 citation statements)
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“…The calculated electrical resistivity values of the samples were in the range of 1.11x10 -7 -2.44x10 -7 Ωm. All of our experimental electrical results are consistent with the results of Ocak et al [8], Aksöz et al [9], and Çadırlı et al [25][26][27]. The obtained data from the present study agree well with the recommended values of electrical data for other Sn-rich studies [9,[25][26][27][28].…”
Section: Resultssupporting
confidence: 93%
“…The calculated electrical resistivity values of the samples were in the range of 1.11x10 -7 -2.44x10 -7 Ωm. All of our experimental electrical results are consistent with the results of Ocak et al [8], Aksöz et al [9], and Çadırlı et al [25][26][27]. The obtained data from the present study agree well with the recommended values of electrical data for other Sn-rich studies [9,[25][26][27][28].…”
Section: Resultssupporting
confidence: 93%
“…The resistivities of the Sn solder, Ag paste, and Ag epoxy in Fig. 1 f have been referenced in previous studies [ 28 , [40] , [41] , [42] ]. The impedance change of the W-paste and particle size were measured using a frequency response analyzer (FRA, Autolab FRA32 ​M, Netherlands).…”
Section: Methodsmentioning
confidence: 99%
“…The most crucial parameters at low frequencies are the conductivities of the conductor, the lead sheath and the armour which have been modeled here for an ambient temperature 3 of 30 • C. It is noted that the conductivity of copper (σ = 5.0·10 7 S/m at 20 • C) has been modified with respect to the correct copper area (roughly 91% for hexagonal close packed threads) and the conductivity of steel (σ = 5.55 · 10 6 π/4 S/m at 20 • C) has been modified with respect to a rectangular close packing of wires. The lead sheath is assumed to consist of pure lead (σ = 4.6 · 10 6 S/m at 20 • C) since the amounts of cadmium and tin are so small that it barely affects the conductivity [6,34]. The armour is also slightly magnetic which has been modeled by using an estimated relative permittivity of µ 10 = 40.…”
Section: Numerical Examplesmentioning
confidence: 99%