Influence of hydrogen incorporation and coating thickness on the corrosion resistance of carbon based coatings deposited by magnetron sputtering

Manninen, Noora; Calderón, Sebastián; Alves, C.F. Almeida; Carvalho, S.; Cavaleiro, A.

doi:10.1016/j.surfcoat.2015.05.029

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…For processes with C-containing reactive gases, such as those for obtaining carbides, carbonitrides or pure carbon-based coatings, carbon amorphous phases can also be deposited in a process very similar to plasma-enhanced chemical vapor deposition. In these cases, hydrogen is incorporated into the coatings; this hydrogen is often not quantified but greatly alters the properties of these amorphous phases, as exemplified in [60,61]. C-based matrices can also be achieved by MS using a graphite target, allowing the deposition of single C coatings, usually known as DLCs [29,62].…”

Section: Deposition Of Ceramic-ag Coatingsmentioning

confidence: 99%

Functional properties of ceramic-Ag nanocomposite coatings produced by magnetron sputtering

Calderón

Cavaleiro

Carvalho

2016

Progress in Materials Science

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127

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In recent years, the use of nanocomposite materials to functionalize surfaces has been investigated, taking advantage of the complementary properties of the nanocomposite constituents. Among this family of materials, ceramic-Ag coatings have been widely studied due to the large variety of functionalities that silver possesses and the possibility of tuning the coating's practical features by selecting the proper matrix to support this noble metal. Therefore, this review focuses on the effects of silver nanoparticles on the functional properties of ceramic-Ag nanocomposites. The chemistry, structure, morphology and topography of the coatings are analyzed with respect to the changes produced by the silver nanoparticles' distribution, amount and sizes and by altering production process variables. To offer a clear understanding of the functionalities of these materials, the optical, electrical, mechanical, tribological, electrochemical and biological properties reported in the last decade are reviewed, focusing on the ability to tune such properties by modifying the silver distribution, morphology and composition. In particular, the surface plasmon resonance, self-lubricating ability and antibacterial effect of silver are covered in detail, establishing their correlation with factors such as silver diffusion, segregation and ionization.

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Section: Deposition Of Ceramic-ag Coatingsmentioning

confidence: 99%

Functional properties of ceramic-Ag nanocomposite coatings produced by magnetron sputtering

Calderón

Cavaleiro

Carvalho

2016

Progress in Materials Science

Self Cite

127

View full text Add to dashboard Cite

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“…Some studies highlight that the increment of sp 2 with respect to sp 3 bonds may lead to an easy dissolution of the films, due to the lower amount of cross-linked bonds in the structure [44][45][46]. In the case of a-C:H, it has been also pointed out that the reduction of the electrochemical conductivity may offer more protection, increasing the charge transfer resistance and decreasing the galvanic corrosion between the substrate and the films [9,47,48]. Additionally, it is also mentioned that hydrogenated coatings showed denser morphologies and less superficial defects, which prevented the electrolyte to penetrate through the coating, thus increasing corrosion resistance [9,49].…”

Section: Carbon-based Films (A-c and Dlc)mentioning

confidence: 99%

Electrochemical Corrosion of Nano-Structured Magnetron-Sputtered Coatings

et al. 2019

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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 difficult 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 different 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 affect 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.

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Electrochemical Mechanism and Preparation of Cr–Low-Carbon Steel Composite in a NaCl–KCl–NaF–Cr2O3 Molten Salt

Zhang

Wang

et al. 2019

The Minerals, Metals &Amp; Materials Series

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Influence of hydrogen incorporation and coating thickness on the corrosion resistance of carbon based coatings deposited by magnetron sputtering

Cited by 7 publications

References 40 publications

Functional properties of ceramic-Ag nanocomposite coatings produced by magnetron sputtering

Functional properties of ceramic-Ag nanocomposite coatings produced by magnetron sputtering

Electrochemical Corrosion of Nano-Structured Magnetron-Sputtered Coatings

Electrochemical Mechanism and Preparation of Cr–Low-Carbon Steel Composite in a NaCl–KCl–NaF–Cr2O3 Molten Salt

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