Abstract
The corrosion characteristics of electrodeposited Ni-Mo-P alloy immersed in 5wt.% NaCl solution were investigated using immersion, anodic polarization curves, XPS and AES analysis. The corrosion rates of amorphous Ni Mo P alloys are lower than that of crystalline Ni-Mo-P alloys. Anodic polarization curve experiments show that for the electrodeposited Ni-Mo-P alloys, the nickel mol fraction of which has in between 0.719 and 0.868, the corrosion potential moves to positive with the increase of P content, and the peak current value of active region increase with the increase of Mo content in alloys, though the effects of P content on the peak current of active region and of Mo content on the corrosion potential are insignificant. XPS and AES analyses indicate that after immersion in 5wt.% NaCl solution, an oxidation film of about 50 nm in thickness is formed on the surface of Ni-Mo-P alloys. This oxidation film is composed of Ni2O3, MoO3 and PO43-, and acts as a barrier between the alloy and the electrolyte.
Keywords
Ni-Mo-P alloy, Corrosion, Anodic polarization curve, XPS, AES
Publication Date
1998-11-28
Online Available Date
1998-11-28
Revised Date
1996-10-31
Received Date
1996-07-11
Recommended Citation
Yue ZENG, Hong-xin HUANG, Xiao-ming XIAO, Shi-xun LIAN, Su-wei YAO, He-tong GUO.
Corrosion Characteristics of Electrodeposited Ni-Mo-P Alloy Immersed in NaCl Solution[J]. Journal of Electrochemistry,
1998
,
4(4): 380-387.
DOI: 10.61558/2993-074X.3145
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol4/iss4/10
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons
