Cu/Co-W Nanolayers Electrodeposited from Single Bath and Investigations of their Nanohardness
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TSYNTSARU, Natalia; BELEVSKII, S.S.; CESIULIS, Henrikas; DIKUSAR, Alexandr; CELIS, Jean-Pierre. Cu/Co-W Nanolayers Electrodeposited from Single Bath and Investigations of their Nanohardness . In: Электронная обработка материалов. 2012, nr. 5(48), pp. 49-57. ISSN 0013-5739.
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Электронная обработка материалов
Numărul 5(48) / 2012 / ISSN 0013-5739 /ISSNe 2345-1718

Cu/Co-W Nanolayers Electrodeposited from Single Bath and Investigations of their Nanohardness

Pag. 49-57

Tsyntsaru Natalia1, Belevskii S.S.1, Cesiulis Henrikas2, Dikusar Alexandr1, Celis Jean-Pierre1
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 Vilnius University
 
Disponibil în IBN: 22 ianuarie 2014


Rezumat

For the first time thick (~ 8 μm) Cu/Co-W multilayered coatings with individual layers ranging from 5 to 200 nm were electrodeposited from a single bath. The content of tungsten in rich-in Co-W layers was controlled by varying current densities in a citrate-borate bath. Continuous Multi-Cycle (CMC) nanoindentation technique was used to analyze mechanical properties of those deposits. Optical examination of the indented zone revealed the absence of cracks inside and outside the indentation area in the interval of the normal loads used. The hardness of Cu/Co-W multilayers varied with the bi-layer period and the electrodeposition parameters. The Cu/Co-W multilayers showed an increased hardness compared to that of Co-W coatings electrodeposited under the same conditions.