X-ray Analisis of the Powder of Micro- and Nanometer Fractions, Obtained from Wastes of Alloy T15K6 in Aqueous Medium

The results of conducting X-ray analysis of the powders, obtained by the electroerosive dispersing of hard alloy wastes brand T15K6 in distilled water are presented. It was established experimentally, that the obtained powder particles consist of the following main phases: W, TiC, W2C, WC, Co and CoO

Properties and Characterizations of Powders Produced from Waste Carbides

The prospects of using the method for dispersing the EDM carbide nanopowders. It is noted that the evaluation of the effectiveness of their use requires a comprehensive theoretical and experimental studies. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3366

Studing Tungsten-containing Electroerosion Powders and Alloys Synthesized from Them

The results of the X-ray spectral microanalysis of the powder obtained using electroerosion dispersion of tungsten-containing wastes in distilled water, and the alloy powder synthesized from this powder are presented in the article. It is shown that the basic elements both in the powder obtained using electroero-sion dispersion of tungsten-containing wastes in distilled water and in the synthesized alloy are tungsten, molybdenum, iron, oxygen and carbon. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3634

Production of Copper Electroerosion Nanopowders from Wastes in Kerosene Medium

This article describes the parameters of copper powder materials production from wastes of electrical copper wire using electroerosion dispersion method in kerosene medium. The results of the percentage of the different fractions of the produced copper powder and the study of the shapes of the resulted copper particles are presented. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3611

Hard Alloy Synthesis from Tungsten-containing Electroerosion Powders of Micro- and Nanometric Fractions

The article presents the results of the studies of the composition, structure and properties of the hard alloy produced using hot-pressing technique with the high current passage from the powder produced us-ing electroerosion dispersion of sintered hard alloys wastes in lamp kerosene and distilled water. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3610

Hard Alloy Synthesis from Tungsten-containing Electroerosion Powders of Micro- and Nanometric Fractions

The article presents the results of the studies of the composition, structure and properties of the hard alloy produced using hot-pressing technique with the high current passage from the powder produced us-ing electroerosion dispersion of sintered hard alloys wastes in lamp kerosene and distilled water. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3610

Microscopic analysis of electroerozyon chrome-containing powders

The method of electro-erosive dispersion (EED) is characterized by relatively low energy costs and ecological purity of the process and allows to obtain powders from wastes of production and consumption. Nevertheless, the wide use of the method of electro-erosive dispersion is hampered by the lack of reference material for optimizing the powder formation regimes and the properties of the obtained copper powders. For wide use of this method, extensive theoretical and experimental studies are required. The purpose of this work is to study their shape and condition of the surface of powders, obtained by electro-erosive dispersion of chromium-containing waste. By the method of scanning electron microscopy (SEM) on the Nova NanoSEM 450 device particles of powders, obtained by electro-erosive dispersion of chromium-containing waste, were investigated. It was found that the shape of the powder particles is due to the way, in which the material is ejected from the well in the EED process. It can be seen, that particles having a regular spherical or elliptical shape prevail in a powder. They are obtained by crystallization of molten material (liquid phase). The particles, formed during the crystallization of the boiling material (vapor phase), have an irregular shape, the size of an order of magnitude smaller, than the particles, formed from the liquid phase, and usually agglomerate with each other and on the surface of other particles. In the EES process, such particles are most susceptible to chemical and phase changes.Keywords: Chrome-containing waste, electroerosive dispersion, powder, form, surfac

Wear-resistant Coatings From Electroerosive Micro- and Nanofraction Powders

The results of studies of relative stability of the cutting tool, restoration and strengthening by electricspark alloying with the using as electrode material the electroerosive tungsten powders are demonstrated. The efficiency of their application is shown

Wear-resistant Coatings From Electroerosive Micro- and Nanofraction Powders

The results of studies of relative stability of the cutting tool, restoration and strengthening by electricspark alloying with the using as electrode material the electroerosive tungsten powders are demonstrated. The efficiency of their application is shown

X-ray Microanalysis of Sintered Nanocomposite Materials from Tungsten-containing Powders

Presents the results of microanalysis of the samples sintered from tungsten-containing powders. It is established that the main elements in the composition of the sintered samples from powders of the tungsten are carbon, iron, tungsten and cobalt