Density and Surface Tension of Lead–Sodium Melts

Karamurzov, B. S.; Kutuev, R. A.; Ponezhev, M. Kh.; Созаев, В. А.; Shermetov, A. Kh.; Shokarov, A.A.

doi:10.3103/s1062873819060182

Cited by 3 publications

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“…To highlight this effect, we calculated the sodium adsorption for each ST isotherm at temperatures of 623, 773, and 923 K. Figure 2 shows all three isotherms in one coordinate grid. Adsorption was calculated using the N-variant of Gibbs' formula [5]:…”

Section: Resultsmentioning

confidence: 99%

“…Since a coolant based on a sodium-lead binary alloy has weaker moderating ability and a smaller neutron capture cross section than pure sodium, the importance of studying the surfaces and interface characteristics of systems that use sodium and lead becomes even clearer [1][2][3][4][5][6][7][8]. It is also important to study the properties of surfaces, due to the need to optimize many technologies of practical importance: casting, tinning and brazing, metallizing, developing liquid-metal coolants for high-energy installations, and producing new alloys and composites (including ones based on lead).…”

Section: Introductionmentioning

confidence: 99%

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Isotherms of Density, Surface Tension, and Na Adsorption in Pb–Na Melts

Karamurzov

Kutuev

Ponezhev

et al. 2021

Bull. Russ. Acad. Sci. Phys.

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A study of the effect small additions of sodium have on the surface tension (ST) of Pb-Na binary melts reveals a sharp drop in ST in the range of 0.2-0.25 at % Na. Calculations of the sodium adsorption isotherm indicate a maximum in the same region of the composition. An explanation for this effect is proposed. It is shown that the composition of the melt at which the maximum of sodium adsorption is observed is determined by the product of coefficient of displacement γ and the exchange parameter of the surface layer of a melt with volume F. It is established that raising the temperature of the melt results in partial decomposition of quasi-molecular formations with participation of sodium, filling of the surface of the melt, and a shift in the position of adsorption maximum toward an increase in the content of sodium.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%