6 documents found, page 1 of 1
Silver activation effect in the antibacterial activity in multifunctional coatings
Ferreri, Isabel; Velasco, Sebastian Calderon; Galindo, R. Escobar; Palacio, C.; Henriques, Mariana; Carvalho, S.With the increase of life expectancy, hip joint prosthesis is being widely used worldwide, with concerns about the quality of life of patients and costs involved in the chirurgical procedures. Staphylococcus epidermidis have emerged as one of the major nosocomial pathogens associated with microbial infections, one of the major causes of the failure of medical devices, that can happen at the time of the chirurgi...
Ag+ release and corrosion behavior of zirconium carbonitride coatings with silv...
Velasco, Sebastian Calderon; Galindo, R. Escobar; Oliveira, J. C.; Cavaleiro, A.; Carvalho, S.Zirconium carbonitride coatings with silver nanoparticles were produced by DC unbalanced dual magnetron sputtering system, using two targets, Zr and Zr/Ag in an Ar, C2H2 and N2 atmosphere. Stainless steel 316L and silicon (100) substrates were used for electrochemical and structural characterization, respectively. Silver was found to be well distributed throughout the coatings, maintaining the films' compositio...
Influence of silver content on the tribomechanical behavior on Ag-TiCN bioactiv...
Sánchez-López, J. C.; Abad, Manuel D.; Carvalho, I.; Galindo, R. Escobar; Benito, N.; Ribeiro, S.; Henriques, Mariana; Cavaleiro, A.; Carvalho, S.Surface modification of bulk materials used in biomedical applications has become an important prerequisite for better biocompatibility. In particular, to overcome the particle generation, low-wear coatings based on carbon (nitrogen) and containing antimicrobial elements such as silver are promising candidates. Thus, the present work explores the potentialities of silver-containing carbonitride-based (Ag-TiCN) ...
Ag-Ti(C,N)-based coatings for biomedical applications : influence of silver con...
Manninen, N. K.; Galindo, R. Escobar; Benito, N.; Figueiredo, N. M.; Cavaleiro, A.; Palacio, C.; Carvalho, S.Ag–TiCN coatings were deposited by dc reactive magnetron sputtering and their structural and morphological properties were evaluated. Compositional analysis showed the existence of Ag–TiCN coatings with different Ag/Ti atomic ratios (ranging from 0 to 1.49). The structural and morphological properties are well correlated with the evolution of Ag/Ti atomic ratio. For the samples with low Ag/Ti atomic ratio (belo...
Improving the visible transmittance of low-e titanium nitride based coatings fo...
Yuste, M.; Galindo, R. Escobar; Carvalho, S.; Albella, J. M.; Sánchez, O.Low-emissivity (low-e) coatings on glass are nowadays extensively used for energy saving applications in architectural windows and on solar thermal collectors. In this work the feasibility of TiN-based layers as low-e coatings has been studied. TiN samples were deposited by reactive magnetron sputtering and, in order to improve their optical properties (transmission in the visible range, T and emissivity, ε), w...
Advanced structural characterization of biocompatible Ag-TiCN coatings
Galindo, R. Escobar; Manninen, N. K.; Ribeiro, S.; Henriques, Mariana; Palacio, C.; Carvalho, SandraOne of the main reasons for biomedical implants failure is the generation of wear debris together with microbial infection. To overcome this problem it has been proposed the use of very low wear coatings as diamond-like carbon (DLC), transitionmetal carbides (MeCx) or nitrides (MeNx) in combination with antibacterial elements such silver, gold or copper. The present work explores the potentialities of silver-co...