Electrodeposition mechanism of Ni - Mo - P alloy in the solution of ammoniac citrate

Yue Zeng; Su Wei Yao; Xue Qiang Cao; Hong Xin Huang; Zi Yi Zhong; He Tong Guo

doi:10.1002/cjoc.19970150302

Electrodeposition mechanism of Ni - Mo - P alloy in the solution of ammoniac citrate

Yue Zeng^*, Su Wei Yao, Xue Qiang Cao, Hong Xin Huang, Zi Yi Zhong, He Tong Guo

^*Corresponding author for this work

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

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Abstract

The induced codeposition mechanism of Mo, P and Ni from the solution of ammoniac citrate was studied by means of steady-state polarization, AC impedance and X-ray Photoelectron Spectroscopy (XPS). The result of electrochemical measurements proved that [NiCit(NHa₃)₂]^- is the electro-active species of nickel, though nickel ions exist mainly as [NiCIt(NHaJa]- in ammoniac citrate. XPS experiments proved the existence of tetravalent molybdenum corresponding to MoO₂ on the surface of some deposits. The intermediate product, MoO₂, was probably reduced to Mo in the alloy deposit by atomic hydrogen adsorbed on the induced metal nickel. The reduction of H₂PO₂^- occurs through two distinctive steps with PH₃ as an intermediate, which subsequently reacts with atomic hydrogen to form P in the alloy deposit. The electrodeposition mechanism was proposed in this paper.

Original language	English
Pages (from-to)	193-200
Number of pages	8
Journal	Chinese Journal of Chemistry
Volume	15
Issue number	3
DOIs	https://doi.org/10.1002/cjoc.19970150302
State	Published - 1997
Externally published	Yes

Keywords

Electrodeposition
Mechanism
Ni - Mo - P alloy

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10.1002/cjoc.19970150302

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@article{0c2ef759066642448bf701746df28fbb,

title = "Electrodeposition mechanism of Ni - Mo - P alloy in the solution of ammoniac citrate",

abstract = "The induced codeposition mechanism of Mo, P and Ni from the solution of ammoniac citrate was studied by means of steady-state polarization, AC impedance and X-ray Photoelectron Spectroscopy (XPS). The result of electrochemical measurements proved that [NiCit(NHa3)2]- is the electro-active species of nickel, though nickel ions exist mainly as [NiCIt(NHaJa]- in ammoniac citrate. XPS experiments proved the existence of tetravalent molybdenum corresponding to MoO2 on the surface of some deposits. The intermediate product, MoO2, was probably reduced to Mo in the alloy deposit by atomic hydrogen adsorbed on the induced metal nickel. The reduction of H2PO2- occurs through two distinctive steps with PH3 as an intermediate, which subsequently reacts with atomic hydrogen to form P in the alloy deposit. The electrodeposition mechanism was proposed in this paper.",

keywords = "Electrodeposition, Mechanism, Ni - Mo - P alloy",

author = "Yue Zeng and Yao, {Su Wei} and Cao, {Xue Qiang} and Huang, {Hong Xin} and Zhong, {Zi Yi} and Guo, {He Tong}",

year = "1997",

doi = "10.1002/cjoc.19970150302",

language = "英语",

volume = "15",

pages = "193--200",

journal = "Chinese Journal of Chemistry",

issn = "1001-604X",

publisher = "Wiley-Blackwell",

number = "3",

}

TY - JOUR

T1 - Electrodeposition mechanism of Ni - Mo - P alloy in the solution of ammoniac citrate

AU - Zeng, Yue

AU - Yao, Su Wei

AU - Cao, Xue Qiang

AU - Huang, Hong Xin

AU - Zhong, Zi Yi

AU - Guo, He Tong

PY - 1997

Y1 - 1997

N2 - The induced codeposition mechanism of Mo, P and Ni from the solution of ammoniac citrate was studied by means of steady-state polarization, AC impedance and X-ray Photoelectron Spectroscopy (XPS). The result of electrochemical measurements proved that [NiCit(NHa3)2]- is the electro-active species of nickel, though nickel ions exist mainly as [NiCIt(NHaJa]- in ammoniac citrate. XPS experiments proved the existence of tetravalent molybdenum corresponding to MoO2 on the surface of some deposits. The intermediate product, MoO2, was probably reduced to Mo in the alloy deposit by atomic hydrogen adsorbed on the induced metal nickel. The reduction of H2PO2- occurs through two distinctive steps with PH3 as an intermediate, which subsequently reacts with atomic hydrogen to form P in the alloy deposit. The electrodeposition mechanism was proposed in this paper.

AB - The induced codeposition mechanism of Mo, P and Ni from the solution of ammoniac citrate was studied by means of steady-state polarization, AC impedance and X-ray Photoelectron Spectroscopy (XPS). The result of electrochemical measurements proved that [NiCit(NHa3)2]- is the electro-active species of nickel, though nickel ions exist mainly as [NiCIt(NHaJa]- in ammoniac citrate. XPS experiments proved the existence of tetravalent molybdenum corresponding to MoO2 on the surface of some deposits. The intermediate product, MoO2, was probably reduced to Mo in the alloy deposit by atomic hydrogen adsorbed on the induced metal nickel. The reduction of H2PO2- occurs through two distinctive steps with PH3 as an intermediate, which subsequently reacts with atomic hydrogen to form P in the alloy deposit. The electrodeposition mechanism was proposed in this paper.

KW - Electrodeposition

KW - Mechanism

KW - Ni - Mo - P alloy

UR - http://www.scopus.com/inward/record.url?scp=0345911530&partnerID=8YFLogxK

U2 - 10.1002/cjoc.19970150302

DO - 10.1002/cjoc.19970150302

M3 - 文章

AN - SCOPUS:0345911530

SN - 1001-604X

VL - 15

SP - 193

EP - 200

JO - Chinese Journal of Chemistry

JF - Chinese Journal of Chemistry

IS - 3

ER -

Electrodeposition mechanism of Ni - Mo - P alloy in the solution of ammoniac citrate

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Keywords

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