Coating development during electroless Ni-B plating on magnesium and AZ91D alloy

E. Correa; A. A. Zuleta; L. Guerra; M. A. Gómez; J. G. Castaño; F. Echeverría; H. Liu; A. Baron-Wiecheć; T. Hashimoto; P. Skeldon; G. E. Thompson

doi:10.1016/j.surfcoat.2013.06.100

Coating development during electroless Ni-B plating on magnesium and AZ91D alloy

E. Correa^*, A. A. Zuleta, L. Guerra, M. A. Gómez, J. G. Castaño, F. Echeverría, H. Liu, A. Baron-Wiecheć, T. Hashimoto, P. Skeldon, G. E. Thompson

^*Corresponding author for this work

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

41 Scopus citations

Abstract

The progress of formation of electroless Ni-B coatings is investigated on pure magnesium and AZ91D alloy. A non-chromate-based electroless treatment is employed that does not use prior chemical activation of the substrate. The surfaces of the substrates are examined at selected times of treatment using scanning electron microscopy, glow discharge optical emission spectroscopy, Rutherford backscattering spectroscopy and nuclear reaction analysis. Etching of the substrates develops an oxide layer on the surface of both substrates. The oxide is thicker on the magnesium than on the alloy. An enrichment of zinc between the bulk substrate and the oxide layer occurs in the case of the AZ91D alloy. Following the commencement of the electroless treatment, the amount of oxide on the substrates is reduced in comparison with the etched surfaces. The average rates of coating growth are similar on the two substrates, namely ~. 12 to 13. μm/h, although coating material is nucleated faster on the magnesium during the early stages of treatment. Wear tests reveal significantly improved wear resistance from application of the coatings, with comparatively small influences on the coefficient of friction.

Original language	English
Pages (from-to)	784-794
Number of pages	11
Journal	Surface and Coatings Technology
Volume	232
DOIs	https://doi.org/10.1016/j.surfcoat.2013.06.100
State	Published - 15 Oct 2013
Externally published	Yes

Keywords

Coatings
Magnesium alloys
NRA
Nickel-boron
RBS
Sliding wear

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10.1016/j.surfcoat.2013.06.100

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@article{f12e99505a7c4bbc92a1fc48b58c6511,

title = "Coating development during electroless Ni-B plating on magnesium and AZ91D alloy",

abstract = "The progress of formation of electroless Ni-B coatings is investigated on pure magnesium and AZ91D alloy. A non-chromate-based electroless treatment is employed that does not use prior chemical activation of the substrate. The surfaces of the substrates are examined at selected times of treatment using scanning electron microscopy, glow discharge optical emission spectroscopy, Rutherford backscattering spectroscopy and nuclear reaction analysis. Etching of the substrates develops an oxide layer on the surface of both substrates. The oxide is thicker on the magnesium than on the alloy. An enrichment of zinc between the bulk substrate and the oxide layer occurs in the case of the AZ91D alloy. Following the commencement of the electroless treatment, the amount of oxide on the substrates is reduced in comparison with the etched surfaces. The average rates of coating growth are similar on the two substrates, namely ~. 12 to 13. μm/h, although coating material is nucleated faster on the magnesium during the early stages of treatment. Wear tests reveal significantly improved wear resistance from application of the coatings, with comparatively small influences on the coefficient of friction.",

keywords = "Coatings, Magnesium alloys, NRA, Nickel-boron, RBS, Sliding wear",

author = "E. Correa and Zuleta, {A. A.} and L. Guerra and G{\'o}mez, {M. A.} and Casta{\~n}o, {J. G.} and F. Echeverr{\'i}a and H. Liu and A. Baron-Wieche{\'c} and T. Hashimoto and P. Skeldon and Thompson, {G. E.}",

note = "Funding Information: The authors are grateful to “ Departamento Administrativo de Ciencia, Tecnolog{\'i}a e Innovaci{\'o}n, COLCIENCIAS”, Universidad de Antioquia and University of Manchester for financial assistance (project 111545221131 and Estrategia de Sostenibilidad 2013–2014 de la Universidad de Antioquia). The authors also thank the Engineering and Physical Sciences Research Council (U.K.) for financial support of the LATEST2 Programme Grant, Drs I. Vickridge and E. Briand of the Institut des Nano Sciences de Paris for assistance with RBS/NRA and Professor Jun Yen Uan, Department of Materials Science and Engineering, National Chung Hsing University (Taiwan) for supply of the magnesium alloy. This work has been partial supported by the European Community as an Integrating Activity Support of Public and Industrial Research Using Ion Beam Technology (SPIRIT) under EC contract no. 227012 .",

year = "2013",

month = oct,

day = "15",

doi = "10.1016/j.surfcoat.2013.06.100",

language = "英语",

volume = "232",

pages = "784--794",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier",

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TY - JOUR

T1 - Coating development during electroless Ni-B plating on magnesium and AZ91D alloy

AU - Correa, E.

AU - Zuleta, A. A.

AU - Guerra, L.

AU - Gómez, M. A.

AU - Castaño, J. G.

AU - Echeverría, F.

AU - Liu, H.

AU - Baron-Wiecheć, A.

AU - Hashimoto, T.

AU - Skeldon, P.

AU - Thompson, G. E.

N1 - Funding Information: The authors are grateful to “ Departamento Administrativo de Ciencia, Tecnología e Innovación, COLCIENCIAS”, Universidad de Antioquia and University of Manchester for financial assistance (project 111545221131 and Estrategia de Sostenibilidad 2013–2014 de la Universidad de Antioquia). The authors also thank the Engineering and Physical Sciences Research Council (U.K.) for financial support of the LATEST2 Programme Grant, Drs I. Vickridge and E. Briand of the Institut des Nano Sciences de Paris for assistance with RBS/NRA and Professor Jun Yen Uan, Department of Materials Science and Engineering, National Chung Hsing University (Taiwan) for supply of the magnesium alloy. This work has been partial supported by the European Community as an Integrating Activity Support of Public and Industrial Research Using Ion Beam Technology (SPIRIT) under EC contract no. 227012 .

PY - 2013/10/15

Y1 - 2013/10/15

N2 - The progress of formation of electroless Ni-B coatings is investigated on pure magnesium and AZ91D alloy. A non-chromate-based electroless treatment is employed that does not use prior chemical activation of the substrate. The surfaces of the substrates are examined at selected times of treatment using scanning electron microscopy, glow discharge optical emission spectroscopy, Rutherford backscattering spectroscopy and nuclear reaction analysis. Etching of the substrates develops an oxide layer on the surface of both substrates. The oxide is thicker on the magnesium than on the alloy. An enrichment of zinc between the bulk substrate and the oxide layer occurs in the case of the AZ91D alloy. Following the commencement of the electroless treatment, the amount of oxide on the substrates is reduced in comparison with the etched surfaces. The average rates of coating growth are similar on the two substrates, namely ~. 12 to 13. μm/h, although coating material is nucleated faster on the magnesium during the early stages of treatment. Wear tests reveal significantly improved wear resistance from application of the coatings, with comparatively small influences on the coefficient of friction.

AB - The progress of formation of electroless Ni-B coatings is investigated on pure magnesium and AZ91D alloy. A non-chromate-based electroless treatment is employed that does not use prior chemical activation of the substrate. The surfaces of the substrates are examined at selected times of treatment using scanning electron microscopy, glow discharge optical emission spectroscopy, Rutherford backscattering spectroscopy and nuclear reaction analysis. Etching of the substrates develops an oxide layer on the surface of both substrates. The oxide is thicker on the magnesium than on the alloy. An enrichment of zinc between the bulk substrate and the oxide layer occurs in the case of the AZ91D alloy. Following the commencement of the electroless treatment, the amount of oxide on the substrates is reduced in comparison with the etched surfaces. The average rates of coating growth are similar on the two substrates, namely ~. 12 to 13. μm/h, although coating material is nucleated faster on the magnesium during the early stages of treatment. Wear tests reveal significantly improved wear resistance from application of the coatings, with comparatively small influences on the coefficient of friction.

KW - Coatings

KW - Magnesium alloys

KW - NRA

KW - Nickel-boron

KW - RBS

KW - Sliding wear

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U2 - 10.1016/j.surfcoat.2013.06.100

DO - 10.1016/j.surfcoat.2013.06.100

M3 - 文章

AN - SCOPUS:84883459539

SN - 0257-8972

VL - 232

SP - 784

EP - 794

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Coating development during electroless Ni-B plating on magnesium and AZ91D alloy

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Keywords

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