Registration Number
0224U032739,
(0124U003748)
, R & D reports
Title
Development of a technology for the formation of heat-resistant coatings by plasma electrolytic oxidation on parts of aviation and rocket and space technics
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Результати попередніх експериментальних досліджень впливу технологічних параметрів процесу ПЕО (компонентного складу електроліту, струмових режимів тощо) на фізико-механічні властивості (мікротвердість, міцність зчеплення покриття з основою) та на жаростійкість покриттів слугуватимуть базою для модернізації установки з метою підвищення енергоефективності процесу плазмового електролітичного оксидування деталей із алюмінієвих сплавів під час формування жаростійких покриттів
Head
Ropiak Liubomyr Ya., Доктор технічних наук
Registration Date
03-12-2024
Organization
Ivano-Frankivsk National Technical University of Oil and Gas
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Development of a technology for the formation of heat-resistant coatings on aluminum alloys by plasma electrolytic oxidation
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The object of research is the technological process of manufacturing parts with oxide coatings formed by plasma electrolytic oxidation (PEO) for operation in aggressive and abrasive environments at elevated temperatures.
Purpose - to develop a technology for the formation of heat-resistant coatings on aluminum alloys by plasma electrolytic oxidation.
Research methods - systematic approach, methods of mathematical and computer modeling, as well as laboratory experiments.
Aluminum alloy parts were selected for hardening with oxide heat-resistant coatings that form PEO, such as the liners and pistons of the internal combustion engine used to drive the drone. Based on the results of computer modeling, it was found that the gradual replacement of aluminum with chromium leads to a continuous evolution of the electronic structure, the transition from a predominantly ionic framework in aluminum oxide Al₂O₃ to a mixed ionic-covalent system in Cr2O3. This serves as a scientific basis for the targeted search for the composition of heat-resistant oxide coatings, the component composition of electrolytes, and the rational choice of reinforcing particles, in particular for functionally gradient materials obtained by centrifugal reinforcement and subjected to PEO. The results of modeling the movement of electrolyte and temperature in the interelectrode space of the electrochemical cell and the temperature distribution in the parts during the formation of an oxide heat-resistant coating allowed us to substantiate the modes of PEO. The modes of cutting processing, plastic deformation of aluminum alloy parts and roughness parameters before PEO were substantiated. The influence of technological parameters of the PEO process (component composition of the electrolyte, current modes, etc.) on the physical and mechanical properties (microhardness, adhesion strength of the coating to the substrate) and on the heat resistance of oxide coatings was investigated.
The stress-strain state of a
Product Description
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Bandura Andrii I.
Lazariev Ihor O.
Malinin Volodymyr Yu.
Nazarenko Serhii K.
Romaniv Mykola M.
Ropiak Liubomyr Ya.
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2026-06-23
