US EPA

4763391 

Journal Article 

Electrodeposition of CoNi and CoNiP alloys in sulphamate electrolytes 

Cojocaru, P; Magagnin, L; Gomez, E; Valles, E 

2010 

Yes 

Journal of Alloys and Compounds
ISSN: 0925-8388 

503 

2 

454-459 

10.1016/j.jallcom.2010.05.032 

WOS:000280927800037 

Magnetic, mechanical and structural characterisation of CoNi and CoNiP electrodeposits has been performed. Bright fine-grained fcc soft-magnetic layers of CoNi have been obtained at the different current densities and bath temperatures used. Alloy formation improves the mechanical properties of coating respect to the single electrodeposited metals. The incorporation of phosphorous in CoNi deposits favoured the deposition process, which occurred at less negative potentials. Moderate phosphorous percentages were obtained but significant modifications in the structure and the magnetic properties were detected. Fcc or hcp CoNiP layers can be obtained as a function of deposition conditions, showing the hcp CoNiP the maximum coercivity values. Fcc CoNiP deposits showed the highest hardness values. (C) 2010 Elsevier B.V. All rights reserved. 

Electrodeposition; Cobalt-nickel alloys; X-ray diffraction; Microhardness; Magnetic properties