Electrochemical Behavior and Compositions of Passive Films of Amorphous Ni-P Coating in Acidic Environment

Guanlin Zhao; Yong Zou; Sui Jinwen; Kenji Matsuda; Zengda Zou; Jie Chen

doi:10.1016/S1452-3981(23)15832-9

Electrochemical Behavior and Compositions of Passive Films of Amorphous Ni-P Coating in Acidic Environment

Guanlin Zhao, Yong Zou, Sui Jinwen, Kenji Matsuda, Zengda Zou, Jie Chen

Materials Design and Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Amorphous Ni-P coating without pores was prepared by electroless plating. The electrochemical behavior of the as-plated Ni-P coating was investigated by potentiodynamic testing in 5 wt. % sulfuric acid solution. Results indicated that the high-phosphorus Ni-P coating has a passivation region in the acid solution. The passive films possessed n-type semiconductor characteristic basing on the Mott-Schottky analysis. Different anodic potentials and polarization time affect the passive films properties. The passive film shows the best corrosion resistance when the potentiostatic potential was 0.1 V and the polarization time was 30 min. XPS results show that the passive film consisted by Ni(OH)₂ and Ni₃(PO₄)₂.

Original language	English
Pages (from-to)	140-153
Number of pages	14
Journal	International Journal of Electrochemical Science
Volume	11
Issue number	1
DOIs	https://doi.org/10.1016/S1452-3981(23)15832-9
State	Published - 2016/01

Keywords

Electrochemical impedance spectroscopy
Electroless Ni-P
Mott-Schottky
Passive film

ASJC Scopus subject areas

Electrochemistry

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10.1016/S1452-3981(23)15832-9

Cite this

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title = "Electrochemical Behavior and Compositions of Passive Films of Amorphous Ni-P Coating in Acidic Environment",

abstract = "Amorphous Ni-P coating without pores was prepared by electroless plating. The electrochemical behavior of the as-plated Ni-P coating was investigated by potentiodynamic testing in 5 wt. % sulfuric acid solution. Results indicated that the high-phosphorus Ni-P coating has a passivation region in the acid solution. The passive films possessed n-type semiconductor characteristic basing on the Mott-Schottky analysis. Different anodic potentials and polarization time affect the passive films properties. The passive film shows the best corrosion resistance when the potentiostatic potential was 0.1 V and the polarization time was 30 min. XPS results show that the passive film consisted by Ni(OH)2 and Ni3(PO4)2.",

keywords = "Electrochemical impedance spectroscopy, Electroless Ni-P, Mott-Schottky, Passive film",

author = "Guanlin Zhao and Yong Zou and Sui Jinwen and Kenji Matsuda and Zengda Zou and Jie Chen",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors. Published by ESG",

year = "2016",

month = jan,

doi = "10.1016/S1452-3981(23)15832-9",

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T1 - Electrochemical Behavior and Compositions of Passive Films of Amorphous Ni-P Coating in Acidic Environment

AU - Zhao, Guanlin

AU - Zou, Yong

AU - Jinwen, Sui

AU - Matsuda, Kenji

AU - Zou, Zengda

AU - Chen, Jie

PY - 2016/1

Y1 - 2016/1

N2 - Amorphous Ni-P coating without pores was prepared by electroless plating. The electrochemical behavior of the as-plated Ni-P coating was investigated by potentiodynamic testing in 5 wt. % sulfuric acid solution. Results indicated that the high-phosphorus Ni-P coating has a passivation region in the acid solution. The passive films possessed n-type semiconductor characteristic basing on the Mott-Schottky analysis. Different anodic potentials and polarization time affect the passive films properties. The passive film shows the best corrosion resistance when the potentiostatic potential was 0.1 V and the polarization time was 30 min. XPS results show that the passive film consisted by Ni(OH)2 and Ni3(PO4)2.

AB - Amorphous Ni-P coating without pores was prepared by electroless plating. The electrochemical behavior of the as-plated Ni-P coating was investigated by potentiodynamic testing in 5 wt. % sulfuric acid solution. Results indicated that the high-phosphorus Ni-P coating has a passivation region in the acid solution. The passive films possessed n-type semiconductor characteristic basing on the Mott-Schottky analysis. Different anodic potentials and polarization time affect the passive films properties. The passive film shows the best corrosion resistance when the potentiostatic potential was 0.1 V and the polarization time was 30 min. XPS results show that the passive film consisted by Ni(OH)2 and Ni3(PO4)2.

KW - Electrochemical impedance spectroscopy

KW - Electroless Ni-P

KW - Mott-Schottky

KW - Passive film

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U2 - 10.1016/S1452-3981(23)15832-9

DO - 10.1016/S1452-3981(23)15832-9

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SN - 1452-3981

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JF - International Journal of Electrochemical Science

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Electrochemical Behavior and Compositions of Passive Films of Amorphous Ni-P Coating in Acidic Environment

Abstract

Keywords

ASJC Scopus subject areas

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