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Aerosol deposition (AD) method is technique for forming high-density ceramic films on substrate material surface at ambient temperature. The Y2O3 film formed by AD method has high density and nanocrystalline structure that crystallite size is under 20 nm. AD Y2O3 film has been used for plasma resistance coating and has helped to reduce the generation of particles in plasma etching process. We investigated...
The article presents a method of producing on the surface of the ceramic substrate on the basis of α-Al2O3 quasi-periodicals and nanostructure. It is shown that a laser beam on the surface of the ceramic substrate based on α-Al2O3 convectional moving as the Rayleigh-Benara can be excited. One of the areas of industrial application in which nanostructures can be used is semiconductor optoelectronics...
In this paper, we present various techniques for the modeling of multi-domain/multi-physics and multi-phase high-frequency problems. The deployment of Multiresolution time-domain principles and of level-set based multi-phase simulation leads to a new generation of computationally efficient tools that could potentially bridge the gap between Maxwell, solid-state and solid/liquid-interface equations...
Bulk solid (Zn)S and liquid zinc (Zn)L samples are oxidized by water with the formation of nanodimensional ZnO. The rate of this process, called chemical recondensation (CR) by water, increases with temperature and water density rise. The CR process begins with the formation of (ZnO)n clusters via the reaction (Zn)S,L + nH2O = [(Zn)S,Lmiddot(ZnO)n] + nH2, followed by their growth at n > 4. The...
Received from sol-gel solutions Al2O3 possesses all properties inherent in nanocomposition structures, and can be used as a material of a matrix for nanocomposite ceramics, and also protective and dielectric coverings with adjustable thickness. Sol-gel stage comes to the end with formation steady periodic colloid structure formed associated in blocks of different sizes of nanopolymers (PSN). The poton-containing...
Using XRD techniques the correlations of the relative crystallite microstrains (RCM) with apparent crystallite sizes (ACS) for zirconia ceramic nanopowders, their green compacts pressed under different power of ultrasound action, and nanostructured ceramics sintered from them at various temperatures were analyzed. It was shown, that for all the samples the RCM values are inversely proportional to...
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