Військовий інститут танкових військ НТУ "ХПІ"

Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/21691

Начальник інституту
Серпухов Олександр Васильович
Склад інституту
1. Факультет озброєння і військової техніки;
2. Факультет радіаційного, хімічного, біологічного захисту та екологічної безпеки;
3. Кафедра фізичного виховання спеціальної фізичної підготовки і спорту;
4. Кафедра військової підготовки офіцерів запасу;
5. Батальйон забезпечення навчального процесу.

Переглянути

Фільтри

2017 - 20182

Налаштування

Автор: search.filters.author.Ved, M.Ключові слова: search.filters.subject.plasma-electrolytic oxidation

Результати пошуку

Зараз показуємо 1 - 2 з 2
  • Ескіз
    Документ
    Morphology and Properties of Coatings Obtained by Plasma-Electrolytic Oxidation of Titanium Alloys in Pyrophosphate Electrolytes
    (Pleiades Publishing, 2017) Sakhnenko, M.; Ved, M.; Karakurkchi, A.
    By means of scanning electron microscopy, atomic-force microscopy, X-ray fluorescence analysis, and X-ray spectral microanalysis it was shown that, under plasma-electrolytic oxidation (PEO) of titanium alloys in pyrophosphate electrolytes, well-adhered oxide coatings with microglobular morphology result. It was demonstrated that the chemical and phase composition of the coatings, as well as the surface topography and grain size, can be controlled by changing the concentration of a pyrophosphate electrolyte and a PEO current density. It was established that the resulting oxide layer is highly resistant to abrasive wear and enhances the titanium corrosion resistance in model media (Ringer’s solution) substantially, which suggests that the coatings are promising for use in biological applications.
  • Ескіз
    Документ
    Study of the influence of oxidizing parameters on the composition and morphology of Al₂O₃·CoOₓ coatings on AL25 alloy
    (Технологический центр, 2018) Karakurkchi, A.; Sakhnenko, M.; Ved, M.
    The influence of operating parameters of plasma-electrolytic oxidation in diphosphate cobalt-containing electrolyte on the process of formation of oxide coatings on alumosilicon alloy AL25 (GOST 1583) was studied. It was shown that inclusion of cobalt into the composition of surface oxide layers leads to a change of morphology and topography of the surface. Variation of current density and PEO time allows flexible control of the process of incorporation of the catalytic component into the matrix of oxide of basic metal. It was shown that at an increase in oxidation time, cobalt content in the surface oxide layer increases. The rational mode of plasma-electrolytic treatment of piston alloy in diphosphate electrolyte for obtaining oxide coatings, enriched with cobalt, was substantiated. It is advisable to perform formation of PEO-coatings on AL25 with developed globular-mosaic surface, maximum cobalt content, with minimizing impurities in the range of current densities of 3–5 A/dm² within 20–40 min. The obtained cobalt-containing oxide coatings can be used in the air and water purification systems, specifically, for intracylinder catalysis of gas emissions of internal combustion engines.