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The influence of the parameters of ceramic fabrication on the structure and adhesion of the applied chemical coating has been studied. The relationship between the sintering temperature of ceramic samples and the quality of the subsequent chemical silver coating has been established. It is shown that high-quality coatings are obtained in a narrow temperature range
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Hits: 18378
Are the results of the study of the adhesion layer metal? silicate glass enamel coating on a scanning electron microscope at different magnifications. The influence of the method of metal preparation, methods and modes of coating, the thickness and number of enamel layers on the formation of a layer of adhesion of the glass enamel coating with the steel surface has been assessed.
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Hits: 18602
The possibility of synthesis of compositions and technology for the preparation and application of a gas-tight isotropic coating for the protection of special structural steels used in the manufacture of hydrogen power plants in order to increase their stability in hydrogen and reduce hydrogen permeability at temperatures up to 600 C is shown.
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Hits: 20387
The IR absorption spectra of boron-containing soil enamels with different contents of lithium oxide Li
2 О were studied and the coordination state of cations was analyzed taking into account the content of the main components.
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Hits: 20598
The possibility of creating glass-ceramic coatings in the BaO - Al
2 О
3 - SiO
2 system for high-temperature gas-static treatment of heat-resistant nickel alloys is shown. The physicochemical and technological properties of glass-ceramic coatings have been investigated, and the efficiency of their application in the gas-static treatment of nickel alloys has been shown.
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Hits: 22101
The influence of metal oxide films on the structure and properties of enamel coatings for steel products is considered. Materials for film deposition were selected, their optimal concentrations were determined. The properties of enamel coatings using metal oxide films have been determined: chemical resistance to various media, adhesion strength of the coating to steel, and abrasion resistance. It is concluded that the developed films have a positive effect on the properties of enamel coatings.
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Hits: 22047
The processes occurring during the impact destruction of the soil enamel coating on steel are considered, the influence of the method of metal preparation, its thickness, the type of enamel and its thickness on the impact strength of the enamel coating on a flat surface is evaluated. Regularities of destruction of enamel coating from impact for "internal" and "external" destruction have been investigated.
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Hits: 22044
When developing various compositions of glasses for enameling different metals, the most important factor for obtaining defect-free continuous coatings is to predict the values ??of the onset of softening of glasses in the viscosity range 10
9 - 10
13 P, corresponding to their the initial stage of sintering. The developed mathematical model for predicting this temperature makes it possible to calculate glasses with an accuracy sufficient to solve this problem.
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Hits: 22621
The possibility of using zinc and tin oxides as antimicrobial agents in the preparation of bactericidal glass enamel coatings is considered. The dependence of the inhibiting ability of glass enamel coatings based on zinc and tin oxide on the concentration of CFU E. Coli has been established. The optimal amount of oxides of zinc and tin oxide has been determined, which makes it possible to provide a high antibacterial effect of glass enamel coatings under conditions of severe bactericidal contamination.
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Hits: 22527
The structures of enamel with different contents of iron oxide have been investigated. It is shown that the structure changes with an increase in the concentration of iron oxide. The increased mobility of silicon-oxygen groups surrounded by iron cations causes their rearrangement into a crystalline phase with minimal energy.
