The surface tension of liquid silicon at high temperature

Millot, F.; Sarou‐Kanian, Vincent; Rifflet, Jean-Claude; Vinet, B.

doi:10.1016/j.msea.2007.10.108

Cited by 45 publications

(24 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values from Grobner et al were calculated by using ThermoCalc software [18]. a) b) c) Figure 2: Characteristic physical variables of liquid silicon versus temperature: a) surface tension [24][25][26][27][28][29][30][31][32][33][34][35], b) density [30,[34][35][36][37][38][39] and c) dynamic viscosity [30,35,40]. …”

Section: Resultsmentioning

confidence: 99%

SiC/Si composites elaboration by capillary infiltration of molten silicon

Roger

Guesnet

Marchais

et al. 2018

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Infiltration of molten metal into ceramic performs without external pressure is a promising fabrication method for metal-matrix composites. Thus, this research is focused on the kinetic of capillary infiltration in the processing of Si/SiC composites. The calculation of the infiltration kinetics for a liquid in a porous material is possible by applying the modified-Washburn equation which involves the effective diameter of the pores. This equation implies a K value depending on the wetting angle, the density, the viscosity and the surface tension of the liquid at a given temperature. In this study, the main aim was to measure the K Si value of molten silicon infiltration into porous SiC at 1500°C. On this way, consolidated β-SiC powder compacts were prepared for infiltration experiments. The effects of the SiC particles presintering on the pore size were examined as they can affect molten silicon infiltration. So, the monitoring of the mass increase during hexadecane rise was used to determine the effective diameter of the pores. It was evidenced that an increase of 15.5% of the initial effective diameter occurs. Consequently, a corresponding correction has to be applied to the initial effective diameter of the siliconinfiltrated compacts. Infiltrations of pure molten silicon into SiC compacts were successfully carried out at 1500°C under high vacuum (5.10 -3 mbar) and the average value of K Si was found equal to (5.8±0.4)×10 -6 cm 5 .s.g -2 . The effect of molten silicon rise on the porosity was also considered.

show abstract

Section: Resultsmentioning

confidence: 99%

SiC/Si composites elaboration by capillary infiltration of molten silicon

Roger

Guesnet

Marchais

et al. 2018

Journal of Alloys and Compounds

View full text Add to dashboard Cite

show abstract

“…At 1450 • C, a third spreading stage (from t = t 2 to t = t eq ) with a different rate is observed. The decrease in surface tension with temperature [39,40], coupled with a decrease in the viscosity of the melt [41][42][43], are probably the factors that make the apparent equilibrium at 36-40 • unstable. The spreading at this stage presents a constant value, indicating that the process is limited by a chemical reaction.…”

Section: Effect Of Experimental Techniquementioning

confidence: 99%

Towards optimization of SiC/CoSi2 composite material manufacture via reactive infiltration: Wetting study of Si–Co alloys on carbon materials

Caccia

Amore

Giuranno

et al. 2015

Journal of the European Ceramic Society

View full text Add to dashboard Cite

“…42) Recently, the surface tension of liquid silicon was measured by the containerless method using the levitation technique 34,43) and the temperature coefficient of the surface tension of silicon was reported as ¹0.060 0.086 mN/m·K, which is much smaller than that of the Fe SiC alloy. Therefore, the Marangoni effect must be considered when controlling the convection of FeSi based solutions during the solution growth of SiC.…”

Section: Temperature Coefficient Of the Surface Tensionmentioning

confidence: 99%

Surface Tensions of Fe–(30–40 mol%) Si–C Alloys at 1523–1723 K

Yoshikawa

2013

Mater. Trans.

View full text Add to dashboard Cite

To analyze the Marangoni effect on fluid flow in an FeSi solution during solution growth of SiC, knowledge of the temperature coefficient of surface tension of the solution is essential. In this investigation, the surface tensions of Fe(3040 mol%) Si alloys and alloys with added carbon were measured at 15231723 K by the maximum bubble pressure method. Surface tensions and temperature coefficients were precisely determined. The measured surface tensions were also compared with estimations based on the modified Butler's model, and the effect of carbon on the surface tension of FeSiC alloys was assessed.

show abstract

The surface tension of liquid silicon at high temperature

Cited by 45 publications

References 38 publications

SiC/Si composites elaboration by capillary infiltration of molten silicon

SiC/Si composites elaboration by capillary infiltration of molten silicon

Towards optimization of SiC/CoSi2 composite material manufacture via reactive infiltration: Wetting study of Si–Co alloys on carbon materials

Surface Tensions of Fe–(30–40 mol%) Si–C Alloys at 1523–1723 K

Contact Info

Product

Resources

About

The surface tension of liquid silicon at high temperature

Cited by 45 publications

References 38 publications

SiC/Si composites elaboration by capillary infiltration of molten silicon

SiC/Si composites elaboration by capillary infiltration of molten silicon

Towards optimization of SiC/CoSi2 composite material manufacture via reactive infiltration: Wetting study of Si–Co alloys on carbon materials

Surface Tensions of Fe&ndash;(30&ndash;40 mol%) Si&ndash;C Alloys at 1523&ndash;1723 K

Contact Info

Product

Resources

About

Surface Tensions of Fe–(30–40 mol%) Si–C Alloys at 1523–1723 K