Development of Functional Coatings by Electron-Beam Sputtering of Sol-Gel Targets

To prepare coatings by electron-beam sputtering, targets have been designed and synthesized by a sol-gel method, based on SiO2 and TiO2 materials. The optimum basic compounds for the synthesis of stable silica sol and titanium are reported. Spectroscopic studies have been conducted for the coatings aiming at the characterization in terms of optical characteristics, such as refractive index, reflectance, transmission and absorption coefficients. The morphology of the layers was investigated by atomic force (AFM) and scanning electron (SEM) microscopies.

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Vacuum deposition of chitosan thin films by electron beam sputtering

High Energy Chemistry ◽

10.1134/s0018143915030078 ◽

2015 ◽

Vol 49 (3) ◽

pp. 213-215 ◽

Cited By ~ 3

Author(s):

T. S. Demina ◽

M. Yu. Yablokov ◽

A. B. Gilman ◽

A. I. Gaidar ◽

T. A. Akopova ◽

...

Keyword(s):

Thin Films ◽

Electron Beam ◽

Vacuum Deposition ◽

Beam Sputtering

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Fabrication of Ag:TiO2Nanocomposite Thin Films by Sol-Gel Followed by Electron Beam Physical Vapour Deposition Technique

Journal of Spectroscopy ◽

10.1155/2013/491716 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 2

Author(s):

Manish Kumar ◽

Krishna Kumar Parashar ◽

Sushil Kumar Tandi ◽

Tanuj Kumar ◽

D. C. Agarwal ◽

...

Keyword(s):

Electron Beam ◽

Absorption Band ◽

Ag Nanoparticles ◽

Vapour Deposition ◽

Sol Gel ◽

Nanocomposite Films ◽

Physical Vapour Deposition ◽

Size Estimation ◽

Morphological Studies ◽

Vis Spectroscopy

Ag:TiO2nanocomposite films have been synthesized by sol-gel method followed by electron beam physical vapour deposition. Targets for this deposition were prepared by a hydraulic press using a powder containing Ag and TiO2prepared by sol-gel technique. Microstructure, surface, and plasmonic properties of nanocomposite films were studied using glancing angle X-ray diffractometer, atomic force microscopy, field emission secondary electron microscopy, and UV-Vis spectroscopy. Microstructural study reveals that Ag nanoparticles are embedded in TiO2matrix consisting of mixed phases of anatase and rutile. Size estimation using Scherrer formula reveals that average crystallite size of Ag nanoparticles is 23 nm. Surface morphological studies indicate that deposited films are uniform and intact to the substrate and have very low value of root mean square roughness. Optical studies exhibit a surface plasmon resonance induced absorption band in visible region, which is the characteristic feature of Ag nanoparticles. The intensity of this absorption band is found to increase with the increase in deposition time. Multiple peaks observed in absorption band were explained using the concepts of extended Mie scattering. Preliminary experiments also suggested that these nanocomposite films exhibit promising photocatalytic properties, which can be used for water treatment.

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Micro-nano structured functional coatings deposited by liquid plasma spraying

Journal of Advanced Ceramics ◽

10.1007/s40145-020-0402-9 ◽

2020 ◽

Vol 9 (5) ◽

pp. 517-534

Author(s):

Yuchun Huan ◽

Kaidi Wu ◽

Changjiu Li ◽

Hanlin Liao ◽

Marc Debliquy ◽

...

Keyword(s):

Plasma Spraying ◽

Structural Characteristics ◽

Sol Gel ◽

Chemical Vapor ◽

Atmospheric Plasma Spraying ◽

Atmospheric Plasma ◽

Functional Coatings ◽

Technical Improvement ◽

Nano Structure ◽

Living Organisms

Abstract Inspired by the micro-nano structure on the surface of biological materials or living organisms, micro-nano structure has been widely investigated in the field of functional coatings. Due to its large specific surface area, porosity, and dual-scale structure, it has recently attracted special attention. The typical fabrication processes of micro-nano structured coatings include sol-gel, hydrothermal synthesis, chemical vapor deposition, etc. This paper presents the main features of a recent deposition and synthesis technique, liquid plasma spraying (LPS). LPS is an important technical improvement of atmospheric plasma spraying. Compared with atmospheric plasma spraying, LPS is more suitable for preparing functional coatings with micro-nano structure. Micro-nano structured coatings are mainly classified into hierarchical-structure and binary-structure. The present study reviews the preparation technology, structural characteristics, functional properties, and potential applications of LPS coatings with a micro-nano structure. The micro-nano structured coatings obtained through tailoring the structure will present excellent performances.

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