Study of Stress Changes in Nanocrystalline Ni Thin Films Eletrodeposited from Chloride Baths

Stress-Driven Surface Topography Evolution in Nanocrystalline Al Thin Films

In their as-fabricated state, nanocrystalline (nc) materials, consisting of individual grains or crystallites with diameters less than 100 nm, are systems that exist far from equilibrium. The large volume fraction of grain boundaries (GB) present in these materials contains considerable excess free energy, which provides a large driving force for grain growth. Grain growth in nc materials has b...

ELECTRODEPOSITION OF Ni-Fe ALLOYS FROM SULFATE, SULFATE-CHLORIDE AND CHLORIDE BATHS

In an attempt to control the film composition, factors affecting the composition of Ni-Fe alloy deposits and their crystal structure have been analyzed as a function of bath composition, cathode current density, bath pH, temperature and an addition of citric acid. antimony electrode revealed that the deposition potential of Fe coincides with the potential where the abrupt increase of pH was obs...

Kinetic Study of Electrochemical Deposition of Nickel from Chloride Baths in the Presence of Saccharin

Nickel is an essential engineering material and electrodeposited Ni has been widely used in many fields to improve surface finishing, corrosion resistance and wear properties. The kinetics of electrochemical deposition of nickel from chloride baths in the presence and absence of saccharin on the copper substrate was investigated by applying cyclic voltammetry and chronoamperometry measureme...

Ferromagnetism in nanocrystalline epitaxial Co:TiO2 thin films

Nanocrystalline structure and hardness of thin films

WaSiaN films were deposited by reactive sputtering in a N2+Ar atmosphere from a W target incrusted with different number of Si pieces. The coatings present different crystallographic structures from the crystalline a-W and W2N to amorphous phase. Crystalline films have very low grain sizes from 15 down to 3 nm. For WaSi films there is a good correlation between the increase of the hardness and ...