Further Development of Testing Procedures for High Temperature Surface Tension Measurements

Ricci, E.; Giuranno, Donatella; Sobczak, N.

doi:10.1007/s11665-013-0624-x

Cited by 21 publications

(10 citation statements)

References 40 publications

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“…To check the reliability of the results obtained, the experimental device described in detail in [39], was used in parallel to process and study the interaction phenomena occurring at the Si-24at%Ti/GC interface. Namely, wettability studies by improved sessile drop method accompanied with noncontact heating of a metal/substrate couple and capillary purification of a metal drop (hereafter dispensed drop (DD)) were done at T = 1450 • C under a static Ar atmosphere [40].…”

Section: Sessile Drop Experiments: Devices and Proceduresmentioning

confidence: 99%

Interface Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-Rich Si-Ti Alloys and Glassy Carbon

et al. 2021

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To properly design and optimize liquid-assisted processes, such as reactive infiltration for fabricating lightweight and corrosion resistant SiC/TiSi2 composites, the extensive knowledge about the interfacial phenomena taking place when liquid Si-rich Si-Ti alloys are in contact with glassy carbon (GC) is of primary importance. To this end, the wettability of GC by two different Si-rich Si-Ti alloys was investigated for the first time by both the sessile and pendant drop methods at T = 1450 °C. The results obtained, in terms of contact angle values, spreading kinetics, reactivity, and developed interface microstructures, were compared with experimental observations previously obtained for the liquid Si-rich Si-Ti eutectics processed under the same operating conditions. As the main outcome, a different Si content did not seem to affect the final contact angle values. Contrarily, the final developed microstructure at the interface and the spreading kinetics were observed as weakly dependent on the composition. From a practical point of view, Si-Ti alloy compositions with a Si content falling in the simple eutectic region of the Si-Ti phase diagram might be potentially used as infiltrating materials of C- and SiC-based composites.

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Section: Sessile Drop Experiments: Devices and Proceduresmentioning

confidence: 99%

Interface Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-Rich Si-Ti Alloys and Glassy Carbon

et al. 2021

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“…To check the reliability of the results obtained, the experimental device described in detail in [39], was in parallel used to process and study the interaction phenomena occurring at the Si-24at%Ti/GC interface by capillary purification sessile drop method, even known as dispensed drop (DD), at T = 1450°C under a static Ar atmosphere [40].…”

Section: Sessile Drop Experiments: Devices and Proceduresmentioning

confidence: 99%

Interfaces Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-rich Si-Ti Alloys and Glassy Carbon

Giuranno¹,

Gambaro²,

Bruzda³

et al. 2021

Preprint

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To design properly and optimizate liquid-assisted processes such as reactive infiltration for fabricating light weight and corrosion resistant SiC/TiSi2 composites, the interfacial phenomena taking place when liquid Si-rich Si-Ti alloys are in contact with glassy carbon (GC) were investigated for the first time by wetting tests performed by both the sessile and pendant drop methods at T = 1450°C. Specifically, two different Si-rich Si-Ti alloys were selected, and the obtained results in terms of contact angle values, spreading kinetics, reactivity, and developed interface microstructures were compared with experimental observations previously obtained for the liquid Si-rich Si-Ti eutectics processed under the same operating conditions. The increase of the Si content did not affected the final contact angle values. Contrarily, the final developed microstructure at the interface as well as the spreading kinetics were observed as weakly dependent on the composition. From the practical point of view, Si-Ti alloy compositions with a Si-content falling in the simple eutectic region of the phase diagram might be potentially used as infiltrant materials of C- and SiC-based composites.

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“…Previous studies have used the pendant drop technique to measure the surface tension of liquid metals [2][3][4] and refractory oxides [5][6][7] . With regards to the experimental setup for liquid metals at high temperature, the approaches to date have employed either refractory oxide capillaries to contain the liquid metal, which is unsuitable for high melting temperature metals, or electron beam or induction melting, which can only be used with electronically conductive liquids and may induce unwanted vibrations [8] .…”

Section: Introductionmentioning

confidence: 99%

Surface Tension of High Temperature Liquids Evaluation with a Thermal Imaging Furnace

Caldwell

Allanore

2019

The Minerals, Metals &Amp; Materials Series

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At high temperature, the reactivity of liquid metals, salts, oxides, etc. often requires a container-less approach for studying composition-sensitive thermodynamic properties, such as component activities and surface tension. This experimental challenge limits access to essential properties, and therefore our understanding of molten systems. Herein, a thermal imaging furnace (TIF) is investigated as a mean of container-less study of molten materials via the formation of pendant drops.In situ optical characterization of a liquid metal drop is proposed through the use of a conventional digital camera. We report one possible method for measuring surface tension of molten systems using this pendant drop technique in conjunction with an image analysis procedure. Liquid copper was used to evaluate the efficacy of this method. The surface tension of liquid copper was calculated to be 1.159 0.043 N m´1 at 1084˘20˝C, in agreement with published values.

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Further Development of Testing Procedures for High Temperature Surface Tension Measurements

Cited by 21 publications

References 40 publications

Interface Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-Rich Si-Ti Alloys and Glassy Carbon

Interface Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-Rich Si-Ti Alloys and Glassy Carbon

Interfaces Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-rich Si-Ti Alloys and Glassy Carbon

Surface Tension of High Temperature Liquids Evaluation with a Thermal Imaging Furnace

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