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Cr-based sputtered decorative coatings for automotive industry
- Source :
- 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)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute (MDPI), 2021.
-
Abstract
- 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.<br />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).
- Subjects :
- 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
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- 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)
- Accession number :
- edsair.doi.dedup.....681a51ecc901b7c7aa3114f017c2e1a6