Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/106864
Title: Electrochemical Corrosion of Nano-Structured Magnetron-Sputtered Coatings
Authors: Calderon, Sebastian
Alves, Cristiana F. Almeida
Manninen, Noora K. 
Cavaleiro, Albano 
Carvalho, Sandra 
Keywords: electrochemical corrosion; magnetron sputtering; nitrides; carbides
Issue Date: 2019
Publisher: MDPI
Project: This research is sponsored by FEDER funds through the program COMPETE–Programa Operacional Factores de Competitividade and by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UID/FIS/04650/2019, andUID/EMS/00285/2013 and in the framework of PTDC/CTM-NAN/4242/2014 and PTDC/NAN-MAT/30789/2017. The authors also thank the financial support by the Portuguese Foundation for Science and Technology (FCT) in the framework of the HEALTHYDENT (co-financed via FEDER (PT2020) POCI-01-0145-FEDER-030708 and FCT (PIDDAC) and the NANOXYPACK POCI-01-0145-FEDER-030789 projects. This research was supported by Norte Regional Operational Program 2014-2020 (Norte2020) through the European Regional Development Fund (ERDF) Nanotechnology-based functional solutions (NORTE-01-0145-FEDER-000019) and through European Social Fund (FSE), under the National Doctoral Program in “Surfaces Engineering and Protection”, NORTE-08-5369-FSE-000047. The authors would like to acknowledge the EU Framework Programme for Research and Innovation H2020, scheme COFUND – Co-funding of Regional, National and International Programmes, under Grant Agreement 713640. The CENTRO Program is also acknowledged through the projects MATIS - CENTRO-01-0145-FEDER-000014 and On-Surf - POCI-01-0247-FEDER-024521. 
metadata.degois.publication.title: Coatings
metadata.degois.publication.volume: 9
metadata.degois.publication.issue: 10
Abstract: Magnetron sputtering has been employed for several decades to produce protective and multi-functional coatings, thanks to its versatility and ability to achieve homogeneous layers. Moreover, it is suitable for depositing coatings with very high melting points and that are thermodynamical unstable, which is di cult to accomplish by other techniques. Among these types of coating, transition metal (Me) carbides/nitrides (MeC/N) and amorphous carbon (a-C) films are particularly interesting because of the possibility of tailoring their properties by selecting the correct amount of phase fractions, varying from pure MeN, MeC, MeCN to pure a-C phases. This complex phase mixture can be even enhanced by adding a fourth element such Ag, Pt, W, Ti, Si, etc., allowing the production of materials with a large diversity of properties. The mixture of phases, resulting from the immiscibility of phases, allows increasing the number of applications, since each phase can contribute with a specific property such as hardness, self-lubrication, antibacterial ability, to create a multifunctional material. However, the existence of di erent phases, their fractions variation, the type of transition metal and/or alloying element, can drastically alter the global electrochemical behaviour of these films, with a strong impact on their stability. Consequently, it is imperative to understand how the main features intrinsic to the production process, as well as induced by Me and/or the alloying element, influence the characteristics and properties of the coatings and how these a ect their electrochemical behaviour. Therefore, this review will focus on the fundamental aspects of the electrochemical behaviour of magnetron-sputtered films as well as of the substrate/film assembly. Special emphasis will be given to the influence of simulated body fluids on the electrochemical behaviour of coatings.
URI: https://hdl.handle.net/10316/106864
ISSN: 2079-6412
DOI: 10.3390/coatings9100682
Rights: openAccess
Appears in Collections:I&D CEMMPRE - Artigos em Revistas Internacionais

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