Influence of Process Parameters on Pulse Electroforming of Nickel-Rich Nickel-Cobalt Alloys from Sulfamate Electrolyte

Hong You Li; Ming Ming Yu; Yi Wang; Mao Lin Shi

doi:10.4028/www.scientific.net/AMR.641-642.440

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 641-642Influence of Process Parameters on Pulse...

Influence of Process Parameters on Pulse Electroforming of Nickel-Rich Nickel-Cobalt Alloys from Sulfamate Electrolyte

Abstract:

Nickel-cobalt alloys have a wide range of industrial applications because of high strength, good corrosion resistance, heat-conductive, etc. As an example, they are used in the electroforming of moulds for die-casting and plastics and in electrotyping. In this paper, experiments on pulse electroforming of nickel-rich nickel-cobalt alloys were studied on SUS304 substrates from sulfamate electrolyte with different average current density, pulse frequency, duty cycle and different bath temperature. It is clearly observed in the nickel-rich deposits that effect of cobalt content gradually increases as the Co2+/Ni2+ concentration ratio and duty cycle increasing; The Co content seems to hardly change when pulse frequency changed from 500 Hz to 1000 Hz; The Co content decreases as current density increasing. High Co content and smooth surface topography can be obtained by reducing current density, increasing bath temperature and pulse duty cycle.

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Periodical:

Advanced Materials Research (Volumes 641-642)

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440-443

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.641-642.440

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Online since:

January 2013

Authors:

Hong You Li, Ming Ming Yu, Yi Wang, Mao Lin Shi

Keywords:

Nickel-Rich Nickel-Cobalt Alloys, Process Parameter, Pulse Electroforming

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