Oxidation resistance of cold-sprayed AlNiCoFeCrTi high entropy coating

Скорочена інформація про документ
dc.contributor.advisorYurkova, A. I.
dc.contributor.authorOlajide, Akinola Iyanu
dc.date.accessioned2023-05-15T07:55:31Z
dc.date.available2023-05-15T07:55:31Z
dc.date.issued2020
dc.description.abstractotherThe master's thesis contains: 71 pages, 26 figures, 4 tables, 97 sources. The purpose of the study is to investigate how high temperature oxidation treatment affects the structure, phase composition, microhardness, and corrosion properties of cold-sprayed AlNiCoFeCrTi high-entropy coatings. In order to achieve this purpose the following tasks are solved: The Microstructural Characterization, XRD patterns of cold spray coatings, SEM Micrographs of Cold Spray and Microhardness of the high entropy coatings. The objective of research is to study the structure, phase composition, microhardness of cold sprayed AlNiCoFeCrTi coating when subjected to high temperature oxidation. The aim of the research is to investigate how high temperature oxidation treatment affects the structure, phase composition, microhardness of cold-sprayed AlNiCoFeCrTi high-entropy coatings. Research methods and equipment: The mechanical alloying was carried out in a planetary ball mill. Spraying was performed on a DYMET 405 setup. The structure and phase composition were studied using a scanning electron microscope, REMMA--106И, and an Ultima IV X-ray diffractometer f. Rigaku. Microhardness was determined by indentation on a PMT-3 device. Scientific novelty of the results: – it was found that AlNiCoFeCrTi cold sprayed HE coatings were successful in preventing the Fe based (Fe18Cr) and Ni based (Ni25Cr) substrates oxidation at 900 °C for 100 h – The oxidated HEA coating exhibits high hardness HV=6,5 GPa. – it was shown that, in contrast to under oxidation of the AlNiCoFeCrTi cold sprayed HE coatings Ni based substarte tends to oxidate faster than that on the Fe based substrateuk
dc.format.extent71 p.uk
dc.identifier.citationOlajide, A. I. Oxidation resistance of cold-sprayed AlNiCoFeCrTi high entropy coating : мaster's thesis : 132 Materials Science / Olajide Akinola Iyanu. - Kyiv, 2020. - 71 p.uk
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/55663
dc.language.isoenuk
dc.publisherIgor Sikorsky Kyiv Polytechnic Instituteuk
dc.publisher.placeKyivuk
dc.subject.udc621.793.79uk
dc.titleOxidation resistance of cold-sprayed AlNiCoFeCrTi high entropy coatinguk
dc.typeMaster Thesisuk

Файли

Контейнер файлів
Зараз показуємо 1 - 1 з 1
Ескіз
Назва:
Olajide_mahistr.pdf
Розмір:
2.2 MB
Формат:
Adobe Portable Document Format
Опис:
Завантажити
Ліцензійна угода
Зараз показуємо 1 - 1 з 1
Ескіз недоступний
Назва:
license.txt
Розмір:
9.1 KB
Формат:
Item-specific license agreed upon to submission
Опис:
Завантажити

Зібрання

Магістерські роботи (ВТМПМ)
Магістерські роботи