Dynamic characteristics of water spreading over laser-textured aluminum alloy surfaces

Кузнецов, Г. В.; Feoktistov, D.V.; Orlova, E.G.; Zykov, I. Yu.; Bartuli, Erik; Raudenský, Miroslav; Zhuikov, A. V.

doi:10.1016/j.colsurfa.2020.125253

Cited by 33 publications

(8 citation statements)

References 51 publications

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“…The reduction of free volume of water absorption is related to the competition mechanism between the diffusion of water in materials. According to the Fick diffusion theory, the diffusion of water molecules into materials are an asymptotic process from fast to slow, and the response process of conditional change caused by material compression is obviously faster than that of water absorption 30,31 . The increase of external pressure leads to the reduction of the size, free volume and internal gap of UHMWPE material, which inhibits the diffusion of water into the material and the less water diffused into the material.…”

Section: Resultsmentioning

confidence: 99%

“…According to the Fick diffusion theory, the diffusion of water molecules into materials are an asymptotic process from fast to slow, and the response process of conditional change caused by material compression is obviously faster than that of water absorption. 30,31 The increase of external pressure leads to the reduction of the size, free volume and internal gap of UHMWPE material, which inhibits the diffusion of water into the material and the less water diffused into the material. The greater the concentration difference at the interface, and the greater the osmotic pressure difference between water and UHMWPE material, which improves the diffusion ability of water molecules penetrating into UHMWPE.…”

Section: Effect Of Pressure On Water Absorption Of Uhmwpe and Pommentioning

confidence: 99%

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Comparative study on the effects of water pressure on water absorption of ultra‐high molecular weight polyethylene and polyformaldehyde

Chen

Bao

Wang

et al. 2022

J of Applied Polymer Sci

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The water absorption of ultra‐high molecular weight polyethylene (UHMWPE) and polyformaldehyde (POM) in different hydrostatic pressure has been investigated by means of high pressure immerse experiments and molecular dynamics simulation. Experiment results showed that water absorption of UHMWPE and POM tended to decrease with the rise of environmental pressure of water within 0 ~ 3 MPa. Water absorption of POM was far greater than UHMWPE under all kinds of hydraulic pressure. When the pressure is 3 MPa, the water absorption of POM is reduced by about 15.2% compared with that under normal pressure, while that of UHMWPE is reduced by about 41.64%. Simulation results showed that water molecules were bonded with UHMWPE molecular chain by means of Van der Waals force, and water molecules were bonded with POM molecular chain by means of Van der Waals force and hydrogen bonds, which provided potent theoretical support for the water absorption properties of UHMWPE and POM.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Pressure On Water Absorption Of Uhmwpe and Pommentioning

confidence: 99%

Comparative study on the effects of water pressure on water absorption of ultra‐high molecular weight polyethylene and polyformaldehyde

Chen

Bao

Wang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…It was found that with an increase in the laser spot overlapping, the samples acquire a darker shade, and the characteristic size of the irregularities also increases, and, accordingly, the porosity of the surface. It is known that darker areas on the surface (the images were obtained using an SEM microscope) characterize less dense areas [ [8]]. It can be concluded that an increase in the density of incidence of the laser beam on the aluminum alloy surface leads to the formation of a less dense texture (more porous).…”

Section: Experimental and Calculation Methodsmentioning

confidence: 99%

Study of the droplet transition from Cassie to Wenzel state on laser-modified metal surfaces

Borovikov

2022

J. Phys.: Conf. Ser.

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The paper presents the experimental study of the influence of laser radiation on the texture formation on aluminum alloy, the droplet transition from Cassie to Wenzel state, as well as the main geometric characteristics of a droplet (contact angle, droplet diameter and height). It was found that laser methods for changing the characteristics and texture of metal surfaces are a modern, flexible tool that makes it possible to achieve unique results in controlling the properties of metal surfaces.

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“…The introduction of materials with improved properties into the production process of energy generation will allow the introduction of generation systems operating on a new type of fuel [2,3]. The desirable properties of structural materials can be obtained by different treatment methods, in particular, abrasive treatment [4]. Due to the developed texture of metal surfaces, it is possible to significantly increase the heat flux [5], increase convection [6] and boiling characteristics [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of conditions of liquid dosing on water droplet spreading

Laga

2022

J. Phys.: Conf. Ser.

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The work presents the experimental studies of the influence of surface roughness on the dynamic characteristics of distilled water droplet spreading. As solid surfaces, copper samples treated with abrasive materials (average grain size of 10–100 μm) and aluminum samples polished to a mirror finish were used. The advancing dynamic contact angles obtained using DSA technique were found. The effect of the droplet formation rate and surface roughness on the characteristics of water droplet spreading, in particular, dynamic contact angle, was analyzed.

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Dynamic characteristics of water spreading over laser-textured aluminum alloy surfaces

Cited by 33 publications

References 51 publications

Comparative study on the effects of water pressure on water absorption of ultra‐high molecular weight polyethylene and polyformaldehyde

Comparative study on the effects of water pressure on water absorption of ultra‐high molecular weight polyethylene and polyformaldehyde

Study of the droplet transition from Cassie to Wenzel state on laser-modified metal surfaces

Influence of conditions of liquid dosing on water droplet spreading

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