Nickel-boron plating on magnesium and AZ91D alloy by a chromium-free electroless process

E. Correa; A. A. Zuleta; M. Sepúlveda; L. Guerra; J. G. Castaño; F. Echeverría; H. Liu; P. Skeldon; G. E. Thompson

doi:10.1016/j.surfcoat.2011.12.023

Nickel-boron plating on magnesium and AZ91D alloy by a chromium-free electroless process

E. Correa
, A. A. Zuleta
, M. Sepúlveda
, L. Guerra
, J. G. Castaño
, F. Echeverría
, H. Liu
, P. Skeldon
, G. E. Thompson

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

Abstract

Ni-B coatings have been deposited directly on commercial purity magnesium and AZ91D magnesium alloy by a chromium-free electroless process and characterized using scanning electron microscopy, glow discharge optical emission spectroscopy, gravimetric measurements and, for corrosion evaluation, hydrogen evolution. The surfaces of the coatings reveal a typical cauliflower-type appearance and form at a rate of ~8 to 13μm/h. The nickel and boron contents of the coatings are relatively uniform across the whole thickness. The addition of NH 4HF 2 to the electroless bath improves the corrosion resistance provided by the coatings during immersion of coated substrates in sodium chloride solution. © 2011 Elsevier B.V.

Original language	English
Pages (from-to)	3088-3093
Number of pages	5
Journal	Surface and Coatings Technology
Volume	206
Issue number	13
DOIs	https://doi.org/10.1016/j.surfcoat.2011.12.023
Publication status	Published - 25 Feb 2012

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SDG 7 Affordable and Clean Energy

Keywords

Alloy
Electroless
Magnesium
Ni-B

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10.1016/j.surfcoat.2011.12.023

Cite this

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title = "Nickel-boron plating on magnesium and AZ91D alloy by a chromium-free electroless process",

abstract = "Ni-B coatings have been deposited directly on commercial purity magnesium and AZ91D magnesium alloy by a chromium-free electroless process and characterized using scanning electron microscopy, glow discharge optical emission spectroscopy, gravimetric measurements and, for corrosion evaluation, hydrogen evolution. The surfaces of the coatings reveal a typical cauliflower-type appearance and form at a rate of \textasciitilde{}8 to 13μm/h. The nickel and boron contents of the coatings are relatively uniform across the whole thickness. The addition of NH 4HF 2 to the electroless bath improves the corrosion resistance provided by the coatings during immersion of coated substrates in sodium chloride solution. {\textcopyright} 2011 Elsevier B.V.",

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doi = "10.1016/j.surfcoat.2011.12.023",

language = "English",

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journal = "Surface and Coatings Technology",

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T1 - Nickel-boron plating on magnesium and AZ91D alloy by a chromium-free electroless process

AU - Correa, E.

AU - Zuleta, A. A.

AU - Sepúlveda, M.

AU - Guerra, L.

AU - Castaño, J. G.

AU - Echeverría, F.

AU - Liu, H.

AU - Skeldon, P.

AU - Thompson, G. E.

PY - 2012/2/25

Y1 - 2012/2/25

N2 - Ni-B coatings have been deposited directly on commercial purity magnesium and AZ91D magnesium alloy by a chromium-free electroless process and characterized using scanning electron microscopy, glow discharge optical emission spectroscopy, gravimetric measurements and, for corrosion evaluation, hydrogen evolution. The surfaces of the coatings reveal a typical cauliflower-type appearance and form at a rate of ~8 to 13μm/h. The nickel and boron contents of the coatings are relatively uniform across the whole thickness. The addition of NH 4HF 2 to the electroless bath improves the corrosion resistance provided by the coatings during immersion of coated substrates in sodium chloride solution. © 2011 Elsevier B.V.

AB - Ni-B coatings have been deposited directly on commercial purity magnesium and AZ91D magnesium alloy by a chromium-free electroless process and characterized using scanning electron microscopy, glow discharge optical emission spectroscopy, gravimetric measurements and, for corrosion evaluation, hydrogen evolution. The surfaces of the coatings reveal a typical cauliflower-type appearance and form at a rate of ~8 to 13μm/h. The nickel and boron contents of the coatings are relatively uniform across the whole thickness. The addition of NH 4HF 2 to the electroless bath improves the corrosion resistance provided by the coatings during immersion of coated substrates in sodium chloride solution. © 2011 Elsevier B.V.

KW - Alloy

KW - Electroless

KW - Magnesium

KW - Ni-B

U2 - 10.1016/j.surfcoat.2011.12.023

DO - 10.1016/j.surfcoat.2011.12.023

M3 - Article

VL - 206

SP - 3088

EP - 3093

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 13

ER -

Nickel-boron plating on magnesium and AZ91D alloy by a chromium-free electroless process

Abstract

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Keywords

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