Experimental determination of thermal conductivity of solid and liquid phases in Bi−Sn and Zn−Mg binary eutectic alloys

Erol, Mustafa; Keşlıoğlu, K.; Şahıngöz, Recep; Maraşl, Necmettin

doi:10.1007/bf03027514

Cited by 44 publications

(19 citation statements)

References 12 publications

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“…From the graph of temperature change versus time, the slope of the liquid and solid phases can be written as (8) and (9) …”

Section: Measurement Of the Thermal Conductivity Ratio Of The Liquid mentioning

confidence: 99%

“…7 is obtained and the value of K S is measured, then the thermal conductivity of the liquid phase can be evaluated from Eq. 7 [7][8][9][10][11].…”

Section: Measurement Of the Thermal Conductivity Ratio Of The Liquid mentioning

confidence: 99%

“…The temperatures within the specimen are measured by thermocouples. This method has been widely used for measuring the thermal conductivity of solids for pure materials and alloys [2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Determination of thermo-electrical properties in Sn based alloys

et al. 2010

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The variation of thermal conductivity of solid phase versus temperature for Sn-21 wt.% Bi, Sn-25 wt.% In and Sn-35 wt.% In-26 wt.% Bi alloys were measured with a radial heat flow apparatus. From the graphs of thermal conductivity versus temperature, the thermal conductivity of the solid phases at their melting temperatures and the thermal temperature coefficients for the same alloys were obtained. The ratios of thermal conductivity of liquid phase to solid phase for the same materials were measured with a Bridgman type directional solidification apparatus. The variations of electrical conductivity of solid phases versus temperature for the same alloys were determined from the Wiedemann-Franz law by using the measured values of thermal conductivity. From the graphs of electrical conductivity versus temperature, the electrical temperature coefficients for the same alloys were also determined. According to present experimental results it can be concluded that the thermal and electrical conductivity of Sn based alloys depend on the thermal and electrical conductivity of the alloying elements. If the thermal and electrical conductivity of the alloying elements are lower than the thermal conductivity of Sn, the thermal conductivity of Sn based alloys decreases, whereas, otherwise, it increases.

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“…From the graph of temperature change versus time, the slope of the liquid and solid phases can be written as (8) and (9) …”

Section: Measurement Of the Thermal Conductivity Ratio Of The Liquid mentioning

confidence: 99%

“…7 is obtained and the value of K S is measured, then the thermal conductivity of the liquid phase can be evaluated from Eq. 7 [7][8][9][10][11].…”

Section: Measurement Of the Thermal Conductivity Ratio Of The Liquid mentioning

confidence: 99%

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Determination of thermo-electrical properties in Sn based alloys

et al. 2010

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“…The value of K S for the solid phase (Zn-0.4 at. pct Mg) at the melting point was measured to be 127.80 W/K m. [23] By using these measured values in Eq. [7], the temperature gradient can be calculated.…”

Section: Geometrical Correction For the Groove Coordinatesmentioning

confidence: 99%

“…pct Mg) was measured to be 0.78. [23] In the present work, the Gibbs-Thomson coefficients were determined with this numerical method using ten equilibrated grain boundary groove shapes of Zn solid in equilibrium with the ZnMg eutectic liquid. A typical grain boundary groove shape of Zn solid in equilibrium with the ZnMg eutectic liquid examined in the present work is shown in Figure 4.…”

Section: A Determination Of Gibbs-thomson Coefficientmentioning

confidence: 99%

Measurement of Solid-Liquid Interfacial Energy for Solid Zn in Equilibrium with the ZnMg Eutectic Liquid

Erol

Keşlıoğlu

Maraşlı

2007

Metall Mater Trans A

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The equilibrated grain boundary groove shapes for solid Zn in equilibrium with the ZnMg eutectic liquid were observed on rapidly quenched samples. The Gibbs-Thomson coefficient for the solid Zn has been determined to be (10.64 6 0.43) 3 10 À8 K m from the observed grain boundary groove shapes with the present numerical model, and the solid-liquid interfacial energy for the solid Zn in equilibrium with the ZnMg eutectic liquid has been obtained to be (89.16 6 8.02) 3 10 À3 J m À2 from the Gibbs-Thomson equation. The grain boundary energy for the solid Zn has also been calculated to be (172.97 6 20.76) 3 10 À3 J m À2 from the observed grain boundary groove shapes.

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