Thermodynamic properties and phase equilibria in the Si-B system

Зайцев, А. И.; Kodentsov, AA Alexander

doi:10.1361/105497101770338987

Cited by 40 publications

(69 citation statements)

References 15 publications

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“…According to their results, the eutectic temperature was found to be 1362 C and lower than the reported value 10) by 23 C. On the other hand, the eutectic temperature was 1388 C in the present thermal analysis. Therefore a thermodynamic re-evaluation of the Si-B system has carried out using the present results and the thermochemical properties by Zaitsev and Kodentsov 11) as well as the already available data. The optimized parameters are listed in Table 2.…”

Section: Optimization Of Parameters and Calculation Of Phase Diagramsmentioning

confidence: 91%

“…8) In the Si-B binary system, a thermodynamic analysis has been carried out by Tokunaga et al 9) using the available experimental data compiled by Olesinski and Abbaschian. 10) Recently, Zaitsev and Kodentsov 11) have investigated the thermodynamic properties in the Si-B system by Knudsen mass spectrometry and established the phase diagram. According to their results, the eutectic temperature was found to be 1362 C and lower than the reported value 10) by 23 C. On the other hand, the eutectic temperature was 1388 C in the present thermal analysis.…”

Section: Optimization Of Parameters and Calculation Of Phase Diagramsmentioning

confidence: 99%

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Phase Equilibria in the Ni-Si-B System

et al. 2003

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A thermodynamic study has been carried out on the Ni-Si-B ternary system, which is an important system in view of the development of Ni-base filler metals. A regular solution approximation based on the sublattice model was adopted to describe the Gibbs energy for the individual phases in the binary and ternary systems. Thermodynamic parameters for each phase have been evaluated using the available experimental information on phase boundaries and other related thermodynamic properties. Thermal analysis experiments have also been conducted on several ternary alloys to re-examine the available ternary experimental data on phase boundaries. The set of evaluated parameters in this study enables reproducible calculations of the liquidus and solidus temperatures and vertical section diagrams satisfactorily.

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Section: Optimization Of Parameters and Calculation Of Phase Diagramsmentioning

confidence: 91%

Section: Optimization Of Parameters and Calculation Of Phase Diagramsmentioning

confidence: 99%

Phase Equilibria in the Ni-Si-B System

et al. 2003

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“…[4,[8][9][10][11] All the compositions studied were distributed within the liquid phase stability field as evenly as possible, were of a fixed x(Fe)/x(Si) ratio, and belonged to one of the examined sections of a constant boron content.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…For this purpose, the data on the vapor pressures of the pure components [10,12,15] have been used. Since over the melts with the small boron contents at the low temperatures the p(B) values were beyond the technique sensitivity, the activity of boron in this case was computed using either the Gibbs-Duhem equation in the form [1] or the expression proposed by Belton et al: [16] [2]…”

Section: A Activities Of the Components And Thermodynamic Functions mentioning

confidence: 99%

A thermodynamic study of liquid Fe-Si-B alloys; an influence of ternary associates on a liquid → glass transition

Зайцев

Zaitseva

Kodentsov

2003

Metall Mater Trans B

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Knudsen-cell mass spectrometry and the integral variant of effusion method have been applied to investigate the thermodynamic properties of liquid Fe-Si-B alloys at temperatures from 1423 to 1894 K over concentration intervals of 9-88.8 at. pct Fe, 2.6-81.4 at. pct Si, and 7.5-50 at. pct B.The activity values of the components and the Gibbs energy of the Fe-Si-B melt formation have been determined over a wide temperature-concentration range. The concentration and temperature dependences of the thermodynamic functions of liquid Fe-Si-B alloy have been described adequately within the ideal associated-solution model under the assumption that binary and ternary associates exist in the melt. The relevance of the model was tested in the undercooled region. The glassforming ability of the melt as shown could be interpreted in terms of the thermodynamic parameters of the association reactions. A specific role of ternary interaction was clarified.

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“…19) Modifications have been made to the thermodynamic properties of the liquid and solid Si-based mixture phases: experimental liquidus data reported by Brosset,20) Armas et al, 21) Male and Salanoubat, 22) solid solubility data reported by Trumbore, 23) Hesse, 24) Samsonov and Sleptsov 25) and Taishi et al, 33) as well as boron activities in the liquid phase measured by Inoue et al 7) Zaitsev et al, 26) Yoshikawa and Morita 27) and Noguchi et al 28) were all used to determine the model parameters. Figure 3 shows the new assessed phase equilibria in the Si-rich Si-B system.…”

Section: The Si-b Systemmentioning

confidence: 99%

A Thermochemical Database for the Solar Cell Silicon Materials

et al. 2009

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The fabrication of solar cell grade silicon (SOG-Si) feedstock involves processes that require direct contact between solid and liquid phases at near equilibrium conditions. Knowledge of the phase diagram and thermochemical properties of the Si-based system is therefore important for providing boundary conditions in the analysis of processes. A self-consistent thermodynamic description of the Si-Ag-Al-As-Au-B-Bi-C-CaCo-Cr-Cu-Fe-Ga-Ge-In-Li-Mg-Mn-Mo-N-Na-Ni-O-P-Pb-S-Sb-Sn-Te-Ti-V-W-Zn-Zr system has recently been developed by SINTEF Materials and Chemistry. The assessed database has been designed for use within the composition space associated with SoG-Si materials. The thermochemical database has further been extended to calculate the surface tensions of liquid Si-based melts. In addition to thermochemical and phase equilibrium calculation, several surface-related properties (temperature and composition gradients, surface excess quantity etc.) are able to simulate simultaneously using the database. The databases can be regarded as the state-of-art equilibrium relations in the Si-based multicomponent system.

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Thermodynamic properties and phase equilibria in the Si-B system

Cited by 40 publications

References 15 publications

Phase Equilibria in the Ni-Si-B System

Phase Equilibria in the Ni-Si-B System

A thermodynamic study of liquid Fe-Si-B alloys; an influence of ternary associates on a liquid → glass transition

A Thermochemical Database for the Solar Cell Silicon Materials

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