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Influence of ag content on mechanical and tribological behavior of DLC coatings
Manninen, N. K.; Ribeiro, F.; Escudeiro, A.; Polcar, T.; Carvalho, S.; Cavaleiro, A.Ag–DLC coatings with Ag contents ranging from 1.3 at.% to 13.1 at.% were deposited by DC magnetron sputtering. The coatings were characterized with respect to their structure (by means of XRD and Raman spectroscopy), mechanical and tribological properties (by scratch test, nanoindentation, residual stress measurements and pin-on-disk test). The incorporation of 13.1 at.% Ag resulted in the formation of Ag grain...
Chromosomal instability in a cat mammary cancer cell line
Borges, A.; Adega, Filomena; Escudeiro, A.; Chaves, Raquel
Carbon-based coatings doped by copper: Tribological and mechanical behavior in ...
Balestra, R. M.; Castro, A. M. G.; Evaristo, M.; Escudeiro, A.; Mutafov, Petr; Polcar, T.; Cavaleiro, A.We deposited C-based films doped with Cu and tested their sliding properties in olive oil as environment-friendly lubricant, which can be used in many mechanical systems, particularly in agriculture engineering. The coatings were deposited in a four unbalanced magnetron sputtering device combining C and C/Cu targets; argon (hydrogen-free films) and Ar/CH4 (hydrogenated films) atmospheres were used. Cu content o...
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