Preparation of Pulse Electrodeposited Mo-Ni Coating

Abstract:

Mo-Ni coatings were prepared on Ni alloy by pulse electrodeposition method. The effects of current density, electrodeposition temperature, frequency, duty cycle and electrodeposition time on microhardness of Mo-Ni coating were researched, respectively. Microhardness of Mo-Ni coating increases with the increase of current density, electrodeposition temperature, frequency and electro-deposition time in 17.75 A/dm² ~ 19.25 A/dm². 21 °C~ 25 °C, 1000 Hz ~ 5000 Hz and 10 min ~ 20 min, respectively. Microhardness of Mo-Ni coating decreases with the increase of electrodeposition temperature, electrodeposition time and duty cycle in 25 °C ~ 37 °C, 20 min ~ 30 min and 0.5 ~ 0.9, respectively. In the range of current density from 19.25A/dm² to 20.75 A/dm², microhardness of Mo-Ni coating is neariy constant with the increase of current density. When electrodeposition parameters: current density 19.25 A/dm², electro-deposition temperature 25 °C, frequency 5000 Hz, duty cycle 0.5 and electrodeposition time 20 min, microhardness of Mo-Ni coatin is as high as 707.9 HV.

• Periodical: Advanced Materials Research (Volumes 971-973)
• Pages: 161-164
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.971-973.161
• Online since: June 2014
• Authors: Xiao Zhen Liu*, Le Tian Xia, Jian Qiang Gen, Xiao Zhou Liu, Jie Chen, Lu Luo
• Keywords: Coating, Microhardness, Pulse Electrodeposition

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