Corrosion behavior and composition analysis of chromate passive film on electroless Ni-P coating

Songlin Mu; Ning Li; Deyu Li; Liying Xu

doi:10.1016/j.apsusc.2010.01.089

Corrosion behavior and composition analysis of chromate passive film on electroless Ni-P coating

Songlin Mu
, Ning Li^*
, Deyu Li
, Liying Xu

^*Corresponding author for this work

Harbin Institute of Technology

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

32 Scopus citations

Abstract

A passive film was formed on electroless Ni-P coating (ENPC) in a bath of K ₂ Cr ₂ O ₇ 30 g/l. XPS and electrochemical methods were employed to analyze its chemical compositions and corrosion behaviors. The potentiodynamic polarization tests indicated the corrosion current of the passivated sample was 1/30 that of as-plated ENPC. The XPS analysis illustrated the film comprised Cr, Ni and O. The film thickness was evaluated to be a few nanometers according to the sputtering rate of Ar ⁺ ion. High-resolution XPS spectra suggested that the detected Cr in film was in the form of trivalent compounds, Cr ₂ O ₃ and Cr(OH) ₃ .

Original language	English
Pages (from-to)	4089-4094
Number of pages	6
Journal	Applied Surface Science
Volume	256
Issue number	13
DOIs	https://doi.org/10.1016/j.apsusc.2010.01.089
State	Published - 15 Apr 2010

Keywords

Corrosion behaviors
Electroless Ni-P coating
Passive film
XPS analysis

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title = "Corrosion behavior and composition analysis of chromate passive film on electroless Ni-P coating",

abstract = " A passive film was formed on electroless Ni-P coating (ENPC) in a bath of K 2 Cr 2 O 7 30 g/l. XPS and electrochemical methods were employed to analyze its chemical compositions and corrosion behaviors. The potentiodynamic polarization tests indicated the corrosion current of the passivated sample was 1/30 that of as-plated ENPC. The XPS analysis illustrated the film comprised Cr, Ni and O. The film thickness was evaluated to be a few nanometers according to the sputtering rate of Ar + ion. High-resolution XPS spectra suggested that the detected Cr in film was in the form of trivalent compounds, Cr 2 O 3 and Cr(OH) 3 .",

keywords = "Corrosion behaviors, Electroless Ni-P coating, Passive film, XPS analysis",

author = "Songlin Mu and Ning Li and Deyu Li and Liying Xu",

year = "2010",

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doi = "10.1016/j.apsusc.2010.01.089",

language = "英语",

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journal = "Applied Surface Science",

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TY - JOUR

T1 - Corrosion behavior and composition analysis of chromate passive film on electroless Ni-P coating

AU - Mu, Songlin

AU - Li, Ning

AU - Li, Deyu

AU - Xu, Liying

PY - 2010/4/15

Y1 - 2010/4/15

N2 - A passive film was formed on electroless Ni-P coating (ENPC) in a bath of K 2 Cr 2 O 7 30 g/l. XPS and electrochemical methods were employed to analyze its chemical compositions and corrosion behaviors. The potentiodynamic polarization tests indicated the corrosion current of the passivated sample was 1/30 that of as-plated ENPC. The XPS analysis illustrated the film comprised Cr, Ni and O. The film thickness was evaluated to be a few nanometers according to the sputtering rate of Ar + ion. High-resolution XPS spectra suggested that the detected Cr in film was in the form of trivalent compounds, Cr 2 O 3 and Cr(OH) 3 .

AB - A passive film was formed on electroless Ni-P coating (ENPC) in a bath of K 2 Cr 2 O 7 30 g/l. XPS and electrochemical methods were employed to analyze its chemical compositions and corrosion behaviors. The potentiodynamic polarization tests indicated the corrosion current of the passivated sample was 1/30 that of as-plated ENPC. The XPS analysis illustrated the film comprised Cr, Ni and O. The film thickness was evaluated to be a few nanometers according to the sputtering rate of Ar + ion. High-resolution XPS spectra suggested that the detected Cr in film was in the form of trivalent compounds, Cr 2 O 3 and Cr(OH) 3 .

KW - Corrosion behaviors

KW - Electroless Ni-P coating

KW - Passive film

KW - XPS analysis

UR - https://www.scopus.com/pages/publications/77950472312

U2 - 10.1016/j.apsusc.2010.01.089

DO - 10.1016/j.apsusc.2010.01.089

M3 - 文章

AN - SCOPUS:77950472312

SN - 0169-4332

VL - 256

SP - 4089

EP - 4094

JO - Applied Surface Science

JF - Applied Surface Science

IS - 13

ER -

Corrosion behavior and composition analysis of chromate passive film on electroless Ni-P coating

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Keywords

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