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Information × Registration Number 0222U000038, 0121U108460 , R & D reports Title Creation of heat-resistant coatings to protect carbon materials from the effects of high-temperature oxidizing media in the temperature range 1700 - 1800 ° C popup.stage_title Head Zmii Viktor I., Доктор технічних наук Registration Date 02-01-2022 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 Report: 49 pages, 32 figures, 4 tables, 13 sources. The object of research - samples of carbon-carbon composite material (VVKM), with a diameter of 8 mm and a length of 80 mm, after applying a heat-resistant coating on their surface. This coating is multilayer and multicomponent, formed by the method of vacuum diffusion activated saturation. The samples are tested at a temperature of 1700 - 1800 ºC in air. The purpose of research is to develop heat-resistant coatings to protect VVKM from the effects of oxidizing environments at temperatures of 1700 - 1800 ºC. These coatings are formed by the method of vacuum diffusion activated saturation. To create a workable protective coating, it is necessary to develop the structure and composition of the layer. As components of this coating it is necessary to use refractory components in the form of powders of such substances as VSi2, HfSi2, WSi2, Ti2, zirconium, boron. Research methods - such methods as X-ray structural and metallographic analyzes, tests for heat resistance are used. The concept on creation of a heat-resistant covering on VVKM with the subsequent reproduction of it on industrial products was made. As a result, the main area of ​​research is the application of a layer of slip on the surface of the samples, followed by vacuum activated silicification. Sodium chloride was used as an activator in the diffusion saturation process. To create a slip used a mixture of fine powders of refractory substances mixed with a liquid solution. A solution of synthetic rubber in gasoline was used as a liquid. For the preparation of the slurry we used powders VSi2, HfSi2, WSi2, Ti2, Nickel, zirconium, boron. A mixture of (20-30) ZrSi2 + (10-20) B + (20-30) MoSi2 + (12-22) HfB2 + (8-18) Ni + 5Al weights was tested on the samples. %. Three groups of samples were tested. Their stability in air at a temperature of T = 1700 ºC was from 0.5 to 4 hours, and at T = 1800 ºC - from 0.5 to 2 hours. Product Description popup.authors Ivanova Svitlana О. Anokhin Olexander L. Barankov Mykhailo I. Bortnitska Margarita O. Brovin Oleksandr M. Vorobjov Anatolii P. Hetman Valentyna F. Gromova Galy`na О. Gujda Viktor V. Hurin Ihor V. Doly`k Natalya V. Domnich Vjacheslav M. Zmij Victor I. Kartsev Mykola F. Korneev Oleksandr O. Kornienko Valentina G. Kryvoshapka Ruslan V. Kunchenko Oleksij V. Kunchenko Yuriy V. Liashenko Ihor А. Мarinin Volodymyr H. Martynenko Lyudmyla I. Ryzhova Tetiana P. Rudenkiy Sergiy G. Savchenko Mykola І. Serdiuk Iryna V. Serchenko Maryna Р. popup.nrat_date 2022-03-09 Close