Production of finly despersed powder from graphite by electrolysis
Автор: I. Y. Shestakov, A. V. Kupryashov, V. D. Utenkov, I. A. Remizov
Журнал: Siberian Aerospace Journal @vestnik-sibsau-en
Рубрика: Technological processes and material science
Статья в выпуске: 4 vol.21, 2020 года.
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Multifunctional coating is a multi-layer structure applied to the surface of an aircraft to protect it from external influences. The main tasks of the multifunctional coating are: restoration of properties, overall dimensions, mass of the surface of the product, which were violated under operating conditions; changing the initial physical, mechanical and chemical properties of the product surface to ensure the specified operating conditions. Today multifunctional coatings based on micro glass spheres with applied tungsten are widely used in aerospace engineering. However, this coating has a number of disadvantages: the coating layers heterogeneity; the composition contains a harmful and dangerous component – a fluorone dye. In this article it is suggested to replace the main component of a multifunctional coating with finely dispersed graphite powder obtained by electrolysis. For this purpose, the equipment based on the principle of a diaphragm electrolyzer was constructed. The main elements of the device are a stainless steel cathode and a graphite anode immersed in an aqueous solution. As a result of anodic processes, a finely dispersed graphite powder was obtained. The average particle size of the resulting graphite particles is 4 microns. This finely dispersed graphite powder can be used as the main component of a multifunctional coating in aircraft, since it has an even homogeneous structure, as well as higher values of the main mechanical properties of a multifunctional coating.
Multifunctional coating, fine graphite powder, electrochemical action, molecular oxygen, diaphragm electrolyzer.
Короткий адрес: https://sciup.org/148321781
IDR: 148321781 | DOI: 10.31772/2587-6066-2020-21-4-574-580
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