Search academic texts

Information × Registration Number 0225U004702, (0121U110102) , R & D reports Title Development of the latest physico-technological foundations of the creation of multilayer multicomponent nitride or carbonitrine nanostructural coatings and the study of interaction with different materials. Investigation of the formation of complex surface layers with elevated characteristics, which contain Cr, Ti, Zr, HF, and, Si, B, C, Mo using vacuum activated diffuse saturation and gas phase deposition (CVD) on steels, refractory metals and carbon materials for use in space technology, aviation and nuclear industry, mechanical engineering popup.stage_title Розробка технології та спеціалізованого обладнання для реалізації методом CVD процесу нанесення Та-покриттів (до 250мкм) на бокову поверхню нейтроноутворюючих вольфрамових елементів мішені для установки «Джерело нейтронів». Head Rudenkyi Serhii H., Доктор технічних наукStolbovyi Viacheslav O., Registration Date 17-12-2025 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 The purpose of the work is to develop protective coatings to ensure the possibility of functioning of products at elevated temperatures and the influence of destructive effort. Increasing the working temperature of steam turbines, which will increase their efficiency, will assist the improvement of the competitiveness of products produced in our country. These are the parts of steam turbines that operate at a temperature of 520 ° C. It is necessary to increase this temperature to a value of 650 ° C, and it is also desirable to increase the frequency time. Development of heat-resistant coatings to protect the champions of combustion of jet engines of small thrust made from niobium alloys and carbon-carbon composite materials. popup.description2 Research report: 40 pages, 13 figures, 3 tables, 16 references. The paper presents the results of experiments on the deposition of tantalum layers on the surface of model samples by the method of thermal decomposition of tantalum pentachloride in vacuum. Samples of ARV graphite measuring 50x19x3 mm and tungsten plates measuring 50x10x0.3 mm were used as substrates. The tantalum layer was deposited at substrate temperatures of 1200 ºС - 1500 ºС. The duration of the thermal decomposition process of metal-containing compounds in all experiments was 30 minutes. Metallographic studies showed that the coating on carbon and metal substrates is dense, does not contain pores and has good adhesion. Model samples protected by a tantalum layer 20 μm thick were obtained. The deposition rate of the tantalum layer was 40 μm/h with a metal yield of 15.16%. The deposition of a tantalum coating 20 μm thick on tungsten substrates was implemented. In the process of obtaining Ta coatings, the samples were heated to 1500°C, and the container with tantalum pentachloride was heated to a temperature of 100°C. As a result of this process, a deposition rate of the tantalum layer of 40 μm/h with a metal yield of 20% was achieved. Experimental plates with a tantalum coating from 10 to 250 μm were obtained. Product Description popup.authors Serdiuk Iryna V. Rudenkyi Serhii H. Stolbovyi Viacheslav O. Andreiev Anatolii O. Yurii V. Kunchenko Tetiana P. Ryzhova Maryna Р. Serchenko Liudmyla I. Martynenko Oleksandr O. Kornieiev Yurij M. Solovichenko Ihor А. Liashenko Mykhailo Y. Bredikhin Ihor I. Konovalov Oleksii V. Kunchenko Yuriy V. Lukyrsky Volodymyr G. Marynin Volodymyr I. Pavlenko Vasyl I. Rak Kostiantyn V. Myroshnychenko Volodymyr I. Kovalenko Mykhailo I. Barankov Valentyna F. Hetman Victor I. Zmij Yuriy I. Polyakov Ruslan V. Kryvoshapka Nora S. Ilchenko popup.nrat_date 2025-12-17 Close