Enhancing UV Radiation Resilience of DLC-Coated Stainless Steel with TiO2: A Dual-Layer Approach

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dc.contributor.authorMacário, Paulo Fabrício
dc.contributor.authorSilveira, Carolina Hahn da
dc.contributor.authorVieira, Angela Aparecida Moraes
dc.contributor.authorMarcondes, André Ricardo
dc.contributor.authorMarques, Francisco das Chagas
dc.contributor.authorFechine, Guilhermino José Macêdo
dc.contributor.authorVieira, Lucia
dc.date.accessioned2026-01-21T14:16:39Z
dc.date.available2026-01-21T14:16:39Z
dc.date.issued22024
dc.description.abstractThis study presents an innovative dual-layer coating approach integrating titanium dioxide (TiO2) onto diamond-like carbon (DLC)-coated 316L stainless steel. The combination of PECVD- deposited DLC and ALD-deposited TiO2 aims to preserve the inherent tribological properties of DLC while mitigating UV-induced degradation. By leveraging the ability of TiO2 to absorb, reflect, and scatter UV light, this dual-layer strategy significantly enhances the durability of DLC coatings in radiation-prone environments. The effects of accelerated aging through UV exposure on DLC and DLC/TiO2 films were evaluated using an Accelerated Weathering Tester. Comprehensive analyses were conducted to assess the structural and mechanical properties before and after UV exposure, including Raman spectroscopy, profilometry, SEM, EDS, nanoindentation, and tribometry. The results demonstrate that the TiO2 layer effectively mitigates UV-induced damage, preserving the DLC film’s integrity and tribological performance even after 408 h of UV aging. Specifically, the DLC/TiO2 coatings maintained lower roughness, higher hardness, and better adhesion than DLC- only coatings under identical conditions. This research significantly advances protective coating technology by enhancing the durability and performance of DLC films, particularly in aerospace and other demanding industries where exposure to UV radiation is a critical concern.
dc.description.physical20 p.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationInstituto Nacional de Pesquisas Espaciais
dc.identifier.affiliationUniversidade Estadual de Campinas
dc.identifier.affiliationUniversidade Presbiteriana Mackenzie
dc.identifier.bibliographicCitationMACÁRIO, P. F. et al. Enhancing UV Radiation Resilience of DLC-Coated Stainless Steel with TiO2: A Dual-Layer Approach. Coatings, v. 14, n. 6, p. 1-20, 2024. Disponível em: https://www.mdpi.com/2079-6412/14/6/777.
dc.identifier.doi10.3390/coatings14060777
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/1100
dc.language.isoen_US
dc.publisherMDPI
dc.rights.holderCoatings
dc.subject.keywordDiamond-like carbon
dc.subject.keywordTitanium dioxide
dc.subject.keywordUV radiation-prone environments
dc.titleEnhancing UV Radiation Resilience of DLC-Coated Stainless Steel with TiO2: A Dual-Layer Approach
dc.typeArtigos de Periódicos

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