Further experiments on liquid Indium and Tin self-diffusion

Careri, G.; Paoletti, A.; Vicentini, M.

doi:10.1007/bf02859571

Cited by 75 publications

(30 citation statements)

References 3 publications

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“…As indicated previously, the results of Söder-convective currents in the reservoir across the mouths of the vall et al, [18] Bruson and Gerl, [19] and Careri et al [20] all capillaries are inducing lid-driven flow in the upper ends give similar values for D 0 and Q which are also close to the of the capillaries. The lid-driven flow suggested here is phenomenological values predicted by Cahoon, [17] as shown somewhat similar to the "⌬l" effect suggested by Foster and in Table IV.…”

Section: Shows That the Experimental Values For Diffusion In Thesupporting

confidence: 75%

“…pct Pb. The activity component shown in Figure 11 Sn [18,19,20,30,31] presented in Table IV and Figure 6, are quite indicates that a 30 pct deviation would be expected over consistent. Other investigations of the solvent self-diffusion this concentration range.…”

Section: Shows That the Experimental Values For Diffusion In Thementioning

confidence: 85%

“…The Arrhenius data It is interesting that the activation energy of about for the eutectic composition are presented in Table V. 25.3Ϯ2.8 kJ/mole, calculated from the normal Arrhenius equation for the average error-function results, and that of V. DISCUSSION 22.6Ϯ4.3 kJ/mole, for the results extrapolated to 0 pct Sn (Table III), are similar to the value of 25.5 kJ/mole obtained A. Pb-Rich Alloys by Niwa et al [11] for the tracer diffusion of Sn in Pb. The activation energy for interdiffusion of Sn in Pb is very close The present results for the interdiffusion of Sn in Pb, presented in Table III and Figure 5, are compared using to the value of 23.4 kJ/mole for the solvent self-diffusion [20] 0 at. pct Pb-solvent self-diffusion of Sn 3.3 Ϯ 0.1 11.7 Ϯ 0.3 Lange et al [30] 0 at.…”

Section: Introductionmentioning

confidence: 88%

“…pct Pb for the Snrich alloys are compared with the (microgravity) Sn tracer The diffusion coefficients for the interdiffusion of Sn in Pb from 0 to 74 at. pct Sn are given in Table I, and coefficoefficients obtained by Södervall et al, [18] Bruson and Gerl, [19] and Careri et al [20] and the phenomenological precients for the interdiffusion of Pb in Sn from 0 to 26 at. pct Pb are given in Table II.…”

Section: Introductionmentioning

confidence: 99%

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Interdiffusion of Sn and Pb in liquid Pb-Sn alloys

Klassen¹,

Cahoon

2000

Metall Mater Trans A

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Coefficients for the interdiffusion of Sn in Pb-rich alloys and Pb in Sn-rich alloys were established using 1.5-mm-diameter capillaries and the semi-infinite rod technique. Interdiffusion coefficients are presented for the entire concentration range from pure Pb to pure Sn, for temperatures from 668 to 1031 K. The concentration dependence of the interdiffusion coefficients was determined by establishing the concentration along the length of the capillaries and calculating the coefficients using a finitedifference technique. The interdiffusion of Sn in Pb, extrapolated to 0 at. pct Sn, is given by D ϭ 8.8 ϫ 10 Ϫ8 exp Ϫ (22,600/RT ) m 2 /s and that for Pb in Sn, extrapolated to 0 at. pct Pb, by D ϭ 2.4 ϫ 10 Ϫ8 exp Ϫ (19,300/RT ) m 2 /s The "average" value for the interdiffusion of Sn in Pb, for the concentration range from 0 to 74 at. pct Sn, is given by D ϭ 1.1 ϫ 10 Ϫ7 exp Ϫ (25,200/RT ) m 2 /s and the average value for the interdiffusion of Pb in Sn, for the concentration range from 0 to 26 at. pct Pb, is given by D ϭ 1.3 ϫ 10 Ϫ8 exp Ϫ (22,600/RT ) m 2 /sThe values obtained for the coefficients agree reasonably well with previous results for the diffusion of Sn in Pb-rich alloys and are consistent with solvent self-diffusion coefficients for pure Pb and pure Sn. However, while the diffusion coefficients obtained from these Arrhenius equations are likely of the right order of magnitude, it is concluded that the results are affected by fluid flow in the capillaries, resulting in higher than actual activation energies. It is suggested that, for the capillary-reservoir technique, convective flow in the reservoir across the open end of the capillaries induces "lid-driven" flow in the upper portions of the capillaries, resulting in higher than actual diffusion coefficients, particularly for the Sn-rich alloys, since the Sn-rich end of the capillaries was open to the reservoir. Because of fluid motion induced in the capillaries, all of the results for solute and self-diffusion in Pb, both present and previous, are likely erroneous because they were obtained using the capillaryreservoir technique. Some previous results for solvent self-diffusion in liquid Sn were obtained using either the thin disk or the semi-infinite rod technique and, since these results agree with results obtained in microgravity, it is concluded that the nonreservoir methods may provide a means of obtaining more accurate liquid diffusion data.

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Section: Shows That the Experimental Values For Diffusion In Thesupporting

confidence: 75%

Section: Shows That the Experimental Values For Diffusion In Thementioning

confidence: 85%

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Interdiffusion of Sn and Pb in liquid Pb-Sn alloys

Klassen¹,

Cahoon

2000

Metall Mater Trans A

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“…According to previous investigations, the diameter of the diffusion samples must be small enough to restrict the influence of convective flow. 10,16,17 In the present sliding cell technique, the designed diameter of the diffusion samples in the sample station is 1.5 mm, the same as used in many literature studies. 1,13,14,18,19 For the diffusion experiments, we usually install the longer sample (sample II, see Fig.…”

Section: B Operationmentioning

confidence: 99%

A sliding cell technique for diffusion measurements in liquid metals

Geng¹,

Zhu²,

Zhang³

2014

AIP Advances

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The long capillary and shear cell techniques are the usual methods for diffusion measurements in liquid metals. Here we present a new “sliding cell technique” to measure interdiffusion in liquid alloys, which combines the merits of these two methods. Instead of a number of shear cells, as used in the shear cell method, only one sliding cell is designed to separate and join the liquid diffusion samples. Using the sliding cell technique, the influence of the heating process (which affects liquid diffusion measurements in the conventional long capillary method) can be eliminated. Time-dependent diffusion measurements at the same isothermal temperature were carried out in Al-Cu liquids. Compared with the previous results measured by in-situ X-ray radiography, the obtained liquid diffusion coefficient in this work is believed to be influenced by convective flow. The present work further supports the idea that to obtain accurate diffusion constants in liquid metals, the measurement conditions must be well controlled, and there should be no temperature gradients or other disturbances.

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Bestimmung des Diffusionskoeffizienten von Tristearin in Triolein nach der Kapillarmethode. 2. Mitteilung

Sauter

1962

Helvetica Chimica Acta

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Further experiments on liquid Indium and Tin self-diffusion

Cited by 75 publications

References 3 publications

Interdiffusion of Sn and Pb in liquid Pb-Sn alloys

Interdiffusion of Sn and Pb in liquid Pb-Sn alloys

A sliding cell technique for diffusion measurements in liquid metals

Bestimmung des Diffusionskoeffizienten von Tristearin in Triolein nach der Kapillarmethode. 2. Mitteilung

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