Abstract
The possibility of obtaining a dispersed material by the method of plasma dynamic synthesis in the Ti-O system is shown. The plasma dynamic synthesis is based on the operation of a pulsed high-current coaxial magnetoplasma accelerator with titanium electrodes. The obtained product was investigated by X-ray diffraction method and transmission electron microscopy. The results showed the presence of two main titanium oxide (IV) crystalline modifications: anatase with tetragonal syngony and rutile also with tetragonal syngony. Moreover, the dominant modification is anatase in synthesized material.
Highlights
The problem of obtaining bulk ultrafine-grained materials and fine-dispersed powders of metals, alloys and compounds designed for various areas of technology has been discussed for a long time in the literature
The results showed the presence, in addition to titanium, oxygen in the amount of 9%, chromium ‒ about 1%
The product of plasma dynamic synthesis without additional preparation was investigated by X-ray diffractometry using Shimadzu XRD 7000S X-ray diffractometer (Cu-Kα)
Summary
The problem of obtaining bulk ultrafine-grained materials and fine-dispersed powders of metals, alloys and compounds designed for various areas of technology has been discussed for a long time in the literature. Bulk ultrafine-grained materials can be obtained directly from bulk coarse-grained and amorphous materials or by powder metallurgy methods from fine-dispersed powders In these days, interest in methods for obtaining superfine-grained bulk and dispersed materials has increased significantly, since it was found that a size decrease of structural elements (particles, crystallites, grains) below a certain threshold value can lead to a noticeable change in properties [1,2,3,4,5]. Interest in methods for obtaining superfine-grained bulk and dispersed materials has increased significantly, since it was found that a size decrease of structural elements (particles, crystallites, grains) below a certain threshold value can lead to a noticeable change in properties [1,2,3,4,5] Such effects appear when the average size of crystalline grains does not exceed 100 nm. The electrical conduction behavior of semiconducting metal oxide nanostructures and the proton conductivity of insulating metal oxide nanostructures commonly changes at different gaseous environments and by their dissociation of protons, making them promising materials for a wide range of eco-friendly and “green” applications [6]
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