Study of the binary diffusion in liquid Sn–Pb and Al–Ge alloys by measurement of the melt concentration

Khairulin, R. A.; Stankus, S. V.; Bezverkhy, P. P.

doi:10.1016/s0925-8388(00)01154-3

Cited by 18 publications

(12 citation statements)

References 6 publications

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“…In experiments performed to investigate the diffusion in a near-eutectic aluminum-germanium alloy (28.5 at.% Ge), the drop of concentration over the sample (35 mm high) decrease from 9 to 2 at.% after a fouror five-hour exposure of the melt at a temperature exceeding the liquidus temperature by 550 K (or by a factor of 1.8). Similar measurements for a Sn-Pb melt (50 at.% Pb) revealed a decrease in the concentration drop from 8 to 3 at.% after a five-hour exposure with a superheat by 520 K (or by a factor of two) [5]. Note that the presence of a vertical density gradient hampers the development of thermogravitational convection; therefore, the development of temperature gradients for agitation is not effective because of the low coefficient of volumetric expansion and high thermal conductivity of metal melts.…”

Section: Introductionsupporting

confidence: 61%

The density of alloys of tin—lead system in the solid and liquid states

Stankus

Khairulin

2006

High Temp

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The method of gamma-raying the samples by a narrow beam of gamma radiation for cesium-137 isotope is used to investigate the density of five liquid alloys of a tin-lead system (17.64, 25.35, 25.61, 26.07, and 33.88 at.% Pb) in the temperature range from 293 to 1040 K with an error of 0.20-0.25%. Approximation dependences are obtained for the density of melts of investigated alloys, and our data are compared with the results of other authors. Procedural aspects of the investigation of the density of binary and multicomponent melts are treated, which are associated with the emergence of gradients of concentration of the components in the gravity field. Tables are compiled of the temperature dependences of the thermal properties of pure tin and lead from zero to 1600-1950 K. It is demonstrated that the density of the solid and liquid phases of tinlead system in the investigated concentration range may be calculated in an additive approximation with an error of 0.1-0.3% or less.

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Section: Introductionsupporting

confidence: 61%

The density of alloys of tin—lead system in the solid and liquid states

Stankus

Khairulin

2006

High Temp

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“…2 do not produce a marked effect on the accuracy of the determination of the local concentration of the separated mixture if the latter is not too different from the mean composition X M . According to our evaluations [10], the error X does not exceed 0.1-0.15 mol% when |X − X M | ≤ 15-20 mol%.…”

Section: Density Of the Constituents And The Homogeneous Solutionmentioning

confidence: 67%

Liquid–Liquid Coexistence Curve of n-Perfluorohexane–n-Hexane System

2007

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The shape of the liquid-liquid phase boundary of the C 6 F 14 -C 6 H 14 system near the critical solution point has been determined by a γ -ray attenuation technique. According to the measurements, the critical solution temperature and composition are 295.69 ± 0.02 K and 36.1 ± 0.3 mol% C 6 F 14 , respectively. The critical exponent of the liquid-liquid coexistence curve is 0.322 ± 0.008. Midpoints of the coexistence curve exhibit a departure from the law of the rectilinear diameter.

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“…We studied the interdiffusion in tin-lead melts using the method based on direct study of the evolution of concentration profile in a liquid sample with the aid of gamma-radiation [4,5]. In principle, this is a version of the capillary method; however, it is free of the disadvantage identified above and inherent in traditional experimental realizations of this procedure.…”

Section: Introductionmentioning

confidence: 99%

The interdiffusion in melts of tin-lead system of eutectic and near-eutectic composition

2008

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The method of gamma-raying of samples by a narrow beam of gamma radiation is used to measure the interdiffusion coefficients in melts of a tin-lead system, which contain 17.6, 26.1, 29.3, and 33.9 at.% Pb, at temperatures from 500 to 1000 K. The results are compared with literature data. It is found that the concentration dependence of diffusion coefficient exhibits no special features in the vicinity of eutectic composition.

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Study of the binary diffusion in liquid Sn–Pb and Al–Ge alloys by measurement of the melt concentration

Cited by 18 publications

References 6 publications

The density of alloys of tin—lead system in the solid and liquid states

The density of alloys of tin—lead system in the solid and liquid states

Liquid–Liquid Coexistence Curve of n-Perfluorohexane–n-Hexane System

The interdiffusion in melts of tin-lead system of eutectic and near-eutectic composition

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