Mass Spectrometric Study of the Thermodynamic Properties of Liquid Fe-Sn, Fe-Sn-Cu Alloys

Yamamoto, Masamichi; Mori, Shizuka; Kato, Eiichi

doi:10.2355/tetsutohagane1955.67.11_1952

Cited by 14 publications

(17 citation statements)

References 4 publications

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“…14) The present g ϱ (Sn) values agree closely with data 15) also obtained using the Knudsen-cell mass spectrometry and with results 29) found while studying heterogeneous equilibria. Disagreement with others researches can be explained by insufficient accuracy of their results owing to indirect methods of calculations and extrapolation.…”

Section: Activity Coefficient Of Tin In Iron Atsupporting

confidence: 89%

“…14)-16). Figure 3 demonstrates that the present D f H values agree well with the calorimetric 17,18) and the Knudsen-cell spectrometry 15,16) results. The authors of Refs.…”

Section: Comparison With Literature Datasupporting

confidence: 83%

“…The components' activities in the liquid Fe-Sn alloys were previously determined by various techniques: EMF, 8,9) transport reactions, 10) effusion, [11][12][13] the Knudsen-cell mass spectrometry. [14][15][16] Figure 2 shows that substantial scatter is inherent in the listed results. The activities found in the present study agree, within experimental errors, with the latest results.…”

Section: Comparison With Literature Datamentioning

confidence: 99%

“…The activities found in the present study agree, within experimental errors, with the latest results. 15,16) The data, 8,9,[11][12][13][14] especially on a(Sn), are considerably higher. Direct calorimetric measurements of the mixing enthalpies of the liquid Fe-Sn alloys were carried out in Refs.…”

Section: Comparison With Literature Datamentioning

confidence: 99%

“…For consideration of simultaneous refinement of steel from Cu and Sn, data on the thermodynamic properties of Fe-Cu-Sn and Fe-Sn liquid solutions are required. The first was never studied while the available information on thermodynamics of the Fe-Sn melt [7][8][9][10][11][12][13][14][15][16][17][18][19] is rather extensive, but quite contradictory. For example, the limiting activity coefficient of Sn, g ϱ (Sn), varies from 1.5 to 6.4.…”

Section: Introductionmentioning

confidence: 99%

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Potentialities of Simultaneous Removal of Tin and Copper from Molten Iron through Evaporation

et al. 2004

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The Knudsen-cell mass spectrometry was used to study evaporation and thermodynamics of pure liquid Sn, Fe-Sn and Fe-Cu-Sn molten alloys containing up to 20.3 mol% Sn or up to 5 mol% Cu and Sn in a wide temperature range. The thermodynamic properties of the binary melt were approximated by means of the subregular solution model with temperature dependent parameters. The properties of the ternary melt were represented with accuracy not worse than the experimental one by combination of the characteristics of the binary constituents. The obtained results were applied to assessment of the potentialities of simultaneous copper and tin removal from molten steel by means of evaporation. Combination of vacuum treatment of a 160-tons ladle with blowing through the molten metal neutral gases was considered as an example. Two processes are responsible for removal of copper and tin: transfer into gas bubbles, free-rising from the ladle bottom to its surface, and evaporation from molten metal surface, turbulized by blowing-through gas. It was shown that duration of the treatment necessary for a decrease in Cu concentration from 0.6 to 0.3 wt% amounts to ϳ1.5 h and is not practically affected by variations in tin content in the range of 0.01 to 0.6 wt%. During this time concentration of tin changes insignificantly at any initial content: from 0.6 to ϳ0.51, from 0.1 to ϳ0.086 or from 0.01 to ϳ0.0086 wt%.

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Section: Activity Coefficient Of Tin In Iron Atsupporting

confidence: 89%

“…14)-16). Figure 3 demonstrates that the present D f H values agree well with the calorimetric 17,18) and the Knudsen-cell spectrometry 15,16) results. The authors of Refs.…”

Section: Comparison With Literature Datasupporting

confidence: 83%