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Citation: Zeng Yue, Yao Su-Wei, Guo He-Tong. Electrodeposition Mechanism of Ni-Mo Alloys from Ammoniacal Citrate Solution[J]. Acta Physico-Chimica Sinica, ;1995, 11(04): 351-355. doi: 10.3866/PKU.WHXB19950413 shu

Electrodeposition Mechanism of Ni-Mo Alloys from Ammoniacal Citrate Solution

1.
Department of Chemistry,Hunan Normal Univeristy,Changsha 410006

Received Date: 22 January 1994
Available Online: 15 April 1995

The electrodeposition mechanism of Ni-Mo alloys from ammoniacal citrate solution was investigated by means of steady-state polarization curves, impedance measurement and XPS analysis. XPS analysis showed the existence of tetravalent molybdenum corresponding to MoO2 on the surface of some deposits. Probably, as an intermediate product, MoO2 was reduced by atomic hydrogen adsorpted on nickel. Electrochemical investigation indicated that [Nicit(NH3)2]-ion is the electro-active species of nickel, though nickel ion exist mainly as [Nicit(NH3)2]- in ammoniacal citrate solution.
- Electrodeposition,
- Ni-Mo alloy,
- Mechanism
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