Cr-based sputtered decorative coatings for automotive industry
| Autor: | Nuno M. G. Parreira, Albano Cavaleiro, Sandra Carvalho, Jorge Ferreira, Edgar Carneiro, Todor Vuchkov, Martin Andritschky |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Reactive sputtering Decorative coatings 02 engineering and technology engineering.material 01 natural sciences 7. Clean energy Article chemistry.chemical_compound Coating 0103 physical sciences Coatings on plastics General Materials Science Polycarbonate Total pressure Hexavalent chromium Deposition (law) 010302 applied physics Microscopy QC120-168.85 Science & Technology QH201-278.5 Metallurgy Sputter deposition Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology TK1-9971 Amorphous solid Descriptive and experimental mechanics chemistry visual_art Chromium coatings visual_art.visual_art_medium engineering Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology Current density |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Materials Volume 14 Issue 19 Materials, Vol 14, Iss 5527, p 5527 (2021) |
| Popis: | The present work aims to study the impact of O and N addition on Cr-sputtered coatings on plastic (polycarbonate, PC) used in automobile parts, as a promisor alternative for auto part metallization, while eliminating the usage of toxic hexavalent chromium. The coatings were deposited using DC magnetron sputtering from a single pure Cr target in a reactive atmosphere (N2 and/or O2). The deposition of the coatings was performed maintaining the total pressure constant and close to 1 Pa by tuning Ar pressure while reactive gases were added. The target current density was kept at JW = 20 mA·cm−2. Structural characterization revealed a mixture of α-Cr, δ-Cr, β-Cr2N, and CrN crystalline structures as well as amorphous oxides. The coating hardness ranged from 9 GPa for the CrON coating to 15 GPa for the CrN coating. All deposited coatings showed a particularly good interface adhesion; adjusting the amount of O and N made it possible to tune the optical properties of the Cr-based coatings as desired. The promising results open future industrialization of sputtered Cr-based coatings for automotive industries. This work was supported by COMPETE 2020 a Portuguese and European Union initiative through the Project POCI-01-0247-FEDER-042785, acronym “GREENCoat”. This research was sponsored by Norte2020, through European Social Fund (FSE), under the National Doctoral Program in “Surfaces Engineering and Protection”, NORTE-08-5369-FSE-000047. This work was supported by the Portuguese Foundation for Science and Technology (FCT) in the framework of Strategic Funding (co-financed via UIDB/00285/2020 and UIDB/04650/2020). |
| Databáze: | OpenAIRE |
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