Electrocrystallization Mechanism and Grain Sizes of Ni-W-B Alloy Eletrodeposits

Authors

Fang-zu YANG, Chem. Dept., State Key Lab. For the Phys. Chem. of the Solid Surf., Insti. Phys. Chem.,Xiamen Univ., Xiamen 361005, China
Gang-min CAO, Chem. Dept., State Key Lab. For the Phys. Chem. of the Solid Surf., Insti. Phys. Chem.,Xiamen Univ., Xiamen 361005, China
Xiao HU, Chem. Dept., State Key Lab. For the Phys. Chem. of the Solid Surf., Insti. Phys. Chem.,Xiamen Univ., Xiamen 361005, China
Shu-kai XU, Chem. Dept., State Key Lab. For the Phys. Chem. of the Solid Surf., Insti. Phys. Chem.,Xiamen Univ., Xiamen 361005, China
Shao-min ZHOU, Chem. Dept., State Key Lab. For the Phys. Chem. of the Solid Surf., Insti. Phys. Chem.,Xiamen Univ., Xiamen 361005, China

Corresponding Author

Fang-zu YANG

Abstract

The electrodeposition characteristics and grain sizes of Ni-W-B alloy have been studied by cyclic voltammetry, potentiostatic step and X-ray diffraction (XRD). The results showed that Ni-W-B alloy electrodeposit obtained from the solution containing ammonium citrate as a complexing agent was presented in the lower electrochemical activity compared with Ni-W alloy. Based upon the i～t curves of potentiostatic step, it was revealed that electrocrystallization of Ni-W-B alloy on glassy carbon followed the mechanism of instantaneous nucleation and three dimensional growth with diffusion controlled. The crystal nucleus number on the surface of electrode was raised by the increase of overpotential. According to XRD experimental results, the grain sizes of the alloy deposits were gradually increased by the rising of deposition current densities, which elucidates that the increase of current density was more benefit to nucleus growing during the electrocrystallization of Ni-W-B alloy.

Keywords

Ni-W-B alloy, Electrodeposition, Nucleation, Grain size

DOI Link

https://doi.org/10.61558/2993-074X.1377

Publication Date

2000-05-28

Online Available Date

2000-05-28

Revised Date

2000-01-09

Received Date

1999-11-09

Recommended Citation

Fang-zu YANG, Gang-min CAO, Xiao HU, Shu-kai XU, Shao-min ZHOU. Electrocrystallization Mechanism and Grain Sizes of Ni-W-B Alloy Eletrodeposits[J]. Journal of Electrochemistry, 2000 , 6(2): 169-174.
DOI: 10.61558/2993-074X.1377
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss2/4