Academic Journal
FORMATION AND RESEARCH OF MULTI-LAYER COMPOSITE PLASMA OXIDE COATINGS BASED ON ELEMENTS OF SCREEN METEROID PTOTECTION
| Title: | FORMATION AND RESEARCH OF MULTI-LAYER COMPOSITE PLASMA OXIDE COATINGS BASED ON ELEMENTS OF SCREEN METEROID PTOTECTION |
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| Authors: | V. A. Okovity, F. I. Panteleenko, O. G. Devoino, V. V. Okovity, V. M. Astashinsky, P. P. Hramtsov, M. Yu. Chernik, V. V. Uglov, S. B. Sobolevskу |
| Source: | Наука и техника, Vol 15, Iss 5, Pp 357-364 (2016) |
| Publisher Information: | Belarusian National Technical University, 2016. |
| Publication Year: | 2016 |
| Subject Terms: | Структура покрытия, Technology, Плазменное покрытие, Фазовый состав, plasma coating, ballistic resistance, Импульсная плазма, coating structure, aluminum oxide, phase composition, process optimization, Оксид алюминия, pulsed plasma, Баллистическая стойкость, Оптимизация процесса |
| Description: | The paper presents results of research for influence of plasma jet parameters (current, spraying distance, plasmasupporting nitrogen gas consumption), fractional composition of an initial powder and cooling degree by compressed air on characteristics of anti-meteorite coatings, subsequent processing modes by pulsed plasma. Properties of the obtained coatings and results of ballistic tests have been given in the paper. The proposed methodology has been based on complex metallographic, X-ray diffraction and electron microscopic investigations of anti-meteorite aluminum oxide coating. Optimization of air plasma spraying parameters for NiAl and Al2O3 materials has been carried out in the paper. The spraying parameters optimization has been executed on the basis of obtaining maximum materials utilization factor. Surface treatment of model screen elements with a double-layer composite coating (adhesive metal NiAl layer and hard ceramic oxide Al2O3 layer) has been fulfilled while using compression plasma stream. Nitrogen has been used as working gas. Composite hard ceramic oxide Al2O3 coating is represented by porous structure consisting of 10–15 µm-size fused Al2O3 particles. Metallic inclusions formed due to erosion of plasmatron electrodes have been observed in the space between the particles. Surface of bilayer composite coatings has been processed by a compression plasma stream and due to nonsteady processes of melting and recrystallization high strength polycrystalline layer has been formed on their surface. In this context, those areas of the polycrystalline layer which had metal inclusions have appeared to be painted in various colors depending on chemical composition of the inclusions. |
| Document Type: | Article Other literature type |
| ISSN: | 2414-0392 2227-1031 |
| DOI: | 10.21122/2227-1031-2016-15-5-357-364 |
| Access URL: | https://sat.bntu.by/jour/article/download/941/895 https://doaj.org/article/12e6b80edb82439087a6097af07745fc https://sat.bntu.by/jour/article/view/941 https://core.ac.uk/display/87464524 https://cyberleninka.ru/article/n/formirovanie-i-issledovanie-mnogosloynyh-kompozitsionnyh-plazmennyh-oksidnyh-pokrytiy-na-elementah-ekrannoy-protivometeornoy http://sat.bntu.by/jour/article/view/941 http://rep.bntu.by/handle/data/25317 https://sat.bntu.by/jour/article/download/941/895 https://rep.bntu.by/handle/data/25317 |
| Rights: | CC BY |
| Accession Number: | edsair.doi.dedup.....e9dc972d250b71e21cfff04d443b373f |
| Database: | OpenAIRE |
| ISSN: | 24140392 22271031 |
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| DOI: | 10.21122/2227-1031-2016-15-5-357-364 |