Dissolutive wetting of Si by molten Cu

Проценко, П.; Козлова, О. В.; Voytovych, R.; Eustathopoulos, N.

doi:10.1007/s10853-008-2814-8

Cited by 45 publications

(31 citation statements)

References 10 publications

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“…In figures 7 and 8 the triple-line radial position results from the present work for Oh = 5.7 × 10 −3 are compared with experimental results from Saiz and Tomsia [7,11] and Protsenko et al [9]. These experiments are conducted at a high temperature (1100…”

Section: B Comparison With Experimentsmentioning

confidence: 75%

“…This has the consequence of increasing the simulation time required for the local equilibration process across the solid-fluid interface as discussed in section V C. Although, this process has a longer duration than physically appropriate in the present work, a time regime over which the controlling mechanism for spreading is the local interface equilibration may be entirely physical. It is noted in Protsenko et al [9] that the diffusive stage may occur in two separate parts. The first part is surmised to be the solid-liquid interface equilibration process and takes approximately an order of magnitude longer than the inertial time scale, which is faster than occurs here, but very similar in nature.…”

Section: E Remarksmentioning

confidence: 97%

“…Typically, experimental studies measure only slow spreading on the order of seconds or even minutes for millimeter-sized metal droplets consistent with diffusion-dominated spreading [1,[5][6][7]. However, using improved techniques, a number of recent experiments [7][8][9][10] capture the rapid early-stage spreading and demonstrate that the spreading duration is consistent with the inertial time scale [11]. The variations in experimental findings can be attributed to differences in substrate temperature, composition of the vapor phase influencing substrate oxidation, contact mechanisms between the substrate and molten droplet, camera shutter speed, as well as other factors [7].…”

Section: Introductionmentioning

confidence: 99%

“…The general consensus of the literature is that inertial spreading occurs more slowly in systems that exhibit dissolution than in immiscible systems that do not exhibit dissolution [1,17]. However, this is contradicted by a number of experiments for saturated and pure liquids that show that the spreading can be on a similar time scale under certain experimental conditions [7,9].…”

Section: Introductionmentioning

confidence: 99%

“…The slip length is found by Ding and Spelt to influence the onset of oscillations that occur when the droplet transitions from the inertial stage to the diffusive stage. The critical value of Re * for which oscillations occur is reduced with decreasing λ. Hocking and Davis [21] have demonstrated that there is no simple relationship between contact angle and velocity when the approach to equilibrium becomes oscillatory, which seems to be the case in a number of experimental and numerical studies of millimeter-sized droplets [8,9,18,19].…”

Section: Introductionmentioning

confidence: 99%

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Modeling the early stages of reactive wetting

2010

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Recent experimental studies of molten metal droplets wetting high temperature reactive substrates have established that the majority of triple-line motion occurs when inertial effects are dominant. In light of these studies, this paper investigates wetting and spreading on reactive substrates when inertial effects are dominant using a thermodynamically derived, diffuse interface model of a binary, three-phase material. The liquid-vapor transition is modeled using a van der Waals diffuse interface approach, while the solid-fluid transition is modeled using a phase field approach. The results from the simulations demonstrate an O t − 1 /2 spreading rate during the inertial regime and oscillations in the triple-line position when the metal droplet transitions from inertial to diffusive spreading. It is found that the spreading extent is reduced by enhancing dissolution by manipulating the initial liquid composition. The results from the model exhibit good qualitative and quantitative agreement with a number of recent experimental studies of hightemperature droplet spreading, particularly experiments of copper droplets spreading on silicon substrates. Analysis of the numerical data from the model suggests that the extent and rate of spreading is regulated by the spreading coefficient calculated from a force balance based on a plausible definition of the instantaneous interface energies. A number of contemporary publications have discussed the likely dissipation mechanism in spreading droplets. Thus, we examine the dissipation mechanism using the entropy-production field and determine that dissipation primarily occurs in the locality of the triple-line region during the inertial stage, but extends along the solid-liquid interface region during the diffusive stage. * Electronic address: daniel.wheeler@nist.gov 1 arXiv:1006.4881v1 [cond-mat.mtrl-sci]

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Section: B Comparison With Experimentsmentioning

confidence: 75%

Section: E Remarksmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling the early stages of reactive wetting

2010

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An investigation on dissolutive wetting of porous urea surface

et al. 2018

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Dissolutive spreading over a porous surface is a phenomenon involving spreading, penetration, as well as dissolution. Droplet spreading forms the basis of numerous industrial operations including the spray coating of urea fertilizer to produce slow release urea. The slow release characteristics of urea highly depend on the coating uniformity that can be achieved by sound knowledge of droplet spreading behaviour over the urea surface. Since numerous waterborne coating materials are being studied presently, dissolutive wetting of the urea surface has been investigated in the current work. Response surface methodology has been utilized to study the interactive effects of process parameters on the dissolutive wetting of an aqueous glycerin solution on a porous urea surface. The effect of impact velocity, surface porosity, and urea solubility has been investigated on three response objectives namely contact angle, spreading factor, and normalized residual drop volume. The results have been compared with an earlier work performed under similar conditions for non-dissolutive wetting. The comparison reveals that dissolutive wetting shows lesser optimum contact angle (81 %) and greater optimum spreading factor (21 %) as compared to non-dissolutive wetting.

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Capillary interactions between molten silicon and porous graphite

et al. 2009

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International audienceThe capillary properties (wetting, infiltration) of the reactive Si/porous graphite system are studied by the sessile drop technique that enables the spreading and infiltration dynamics to be monitored in situ. The experiments are performed by varying the temperature, the type of graphite (porosity, grain size) and the vapour phase (inert gas or high vacuum). Further experiments are performed in order to quantify the influence of the exothermic reaction between Si and graphite on the temperature field close to the infiltration front. The effects of Si-graphite interactions on graphite mechanical integrity are also evidenced

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Dissolutive wetting of Si by molten Cu

Cited by 45 publications

References 10 publications

Modeling the early stages of reactive wetting

Modeling the early stages of reactive wetting

An investigation on dissolutive wetting of porous urea surface

Capillary interactions between molten silicon and porous graphite

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