Controllable manipulation of crystallinity and morphology of aluminium surfaces using high intensity ultrasound

Kollath, Anna; Cherepanov, Pavel V.; Andreeva, Daria V.

doi:10.1016/j.apacoust.2015.06.016

Cited by 9 publications

(6 citation statements)

References 28 publications

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“…It is worth noting that the laser texturing is not the only method of physical treatment of the surfaces, allowing one to impart the hierarchical roughness to the material surface. Thus, for example, it was shown that high-intensity ultrasound provides controllable metal processing with the manipulation of morphology, composition, crystallinity, and some mechanical properties of metal surfaces for different applications. − However, the morphology of the coatings obtained on the basis of high-intensity ultrasound treatment − and of the laser surface texturing employed here is very different. For the ultrasound treatment, the sponge-like textures with concave curvature of main texture elements (pores) are characteristic.…”

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confidence: 99%

Combination of Functional Nanoengineering and Nanosecond Laser Texturing for Design of Superhydrophobic Aluminum Alloy with Exceptional Mechanical and Chemical Properties

et al. 2017

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Industrial application of metallic materials is hindered by several shortcomings, such as proneness to corrosion, erosion under abrasive loads, damage due to poor cold resistance, or weak resistance to thermal shock stresses, etc. In this study, using the aluminum-magnesium alloy as an example of widely spread metallic materials, we show that a combination of functional nanoengineering and nanosecond laser texturing with the appropriate treatment regimes can be successfully used to transform a metal into a superhydrophobic material with exceptional mechanical and chemical properties. It is demonstrated that laser chemical processing of the surface may be simultaneously used to impart multimodal roughness and to modify the composition and physicochemical properties of a thick surface layer of the substrate itself. Such integration of topographical and physicochemical modification leads to specific surface nanostructures such as nanocavities filled with hydrophobic agent and hard oxynitride nanoinclusions. The combination of superhydrophobic state, nano- and micro features of the hierarchical surface, and the appropriate composition of the surface textured layer allowed us to provide the surface with the outstanding level of resistance of superhydrophobic coatings to external chemical and mechanical impacts. In particular, experimental data presented in this study indicate high resistance of the fabricated coatings to pitting corrosion, superheated water vapor, sand abrasive wear, and rapid temperature cycling from liquid nitrogen to room temperatures, without notable degradation of superhydrophobic performance.

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confidence: 99%

Combination of Functional Nanoengineering and Nanosecond Laser Texturing for Design of Superhydrophobic Aluminum Alloy with Exceptional Mechanical and Chemical Properties

et al. 2017

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“…The possibility to change the bimetallic structure exhibited by the NPs under the influence of US waves was considered to be part of further investigations. Change in metallic structures has been previously reported [55] and also the effects of grain size decrease by US waves [56].…”

Section: Resultsmentioning

confidence: 86%

“…A chemoelectronic circuit composed of Au NPs coated with different types of organic molecules has been recently suggested for the development of diodes/transistors. In this respect, the major interest is manipulating the ions’ movement of the packed Au NPs in an inherent electric field [56].…”

Section: Resultsmentioning

confidence: 99%

Ultrasonic Influence on Plasmonic Effects Exhibited by Photoactive Bimetallic Au-Pt Nanoparticles Suspended in Ethanol

Hurtado-Aviles

Torres²,

Trejo-Valdéz

et al. 2019

Materials

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The optical behavior exhibited by bimetallic nanoparticles was analyzed by the influence of ultrasonic and nonlinear optical waves in propagation through the samples contained in an ethanol suspension. The Au-Pt nanoparticles were prepared by a sol-gel method. Optical characterization recorded by UV-vis spectrophotometer shows two absorption peaks correlated to the synergistic effects of the bimetallic alloy. The structure and nanocrystalline nature of the samples were confirmed by Scanning Transmission Electron Microscopy with X-ray energy dispersive spectroscopy evaluations. The absorption of light associated with Surface Plasmon Resonance phenomena in the samples was modified by the dynamic influence of ultrasonic effects during the propagation of optical signals promoting nonlinear absorption and nonlinear refraction. The third-order nonlinear optical response of the nanoparticles dispersed in the ethanol-based fluid was explored by nanosecond pulses at 532 nm. The propagation of high-frequency sound waves through a nanofluid generates a destabilization in the distribution of the nanoparticles, avoiding possible agglomerations. Besides, the influence of mechanical perturbation, the container plays a major role in the resonance and attenuation effects. Ultrasound interactions together to nonlinear optical phenomena in nanofluids is a promising alternative field for a wide of applications for modulating quantum signals, sensors and acousto-optic devices.

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“…When reaching critical size, the bubbles collapse, producing shock waves, microjets and reactive oxygen species (ROS) that modify the surface of the treated material. In the cases of non-aqueous media [61] , [62] , [63] , [64] , [65] , the decomposition of ethanol and ethylene glycol include the formation of H·, C 2 H 5 O· and C 2 H 5 O 2 · radicals being the quenchers of the OH radicals.…”

Section: Resultsmentioning

confidence: 99%

Characterization of transient cavitation activity during sonochemical modification of magnesium particles

Brezhneva

Дежкунов

Ulasevich

et al. 2021

Ultrasonics Sonochemistry

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Controllable manipulation of crystallinity and morphology of aluminium surfaces using high intensity ultrasound

Cited by 9 publications

References 28 publications

Combination of Functional Nanoengineering and Nanosecond Laser Texturing for Design of Superhydrophobic Aluminum Alloy with Exceptional Mechanical and Chemical Properties

Combination of Functional Nanoengineering and Nanosecond Laser Texturing for Design of Superhydrophobic Aluminum Alloy with Exceptional Mechanical and Chemical Properties

Ultrasonic Influence on Plasmonic Effects Exhibited by Photoactive Bimetallic Au-Pt Nanoparticles Suspended in Ethanol

Characterization of transient cavitation activity during sonochemical modification of magnesium particles

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