FeB and FeB/h‐BN based anti‐corrosive composite coatings for aluminium alloys

FeB and FeB/h‐BN based anti‐corrosive composite coatings for aluminium alloys Purpose – The purpose of this paper is to investigate the corrosion behaviour of ferroboron (FeB) and FeB/h‐BN (hexagonal boron nitride) coatings deposited onto A383 substrates by atmospheric plasma spraying. Design/methodology/approach – Potentiodynamic scanning (PDS) and electrochemical impedance spectroscopy (EIS) were used to evaluate the corrosion susceptibilities of the composite coatings. Microstructural characterizations were carried out by using scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS). Findings – It was observed that the coatings resisted localized corrosion in NaCl solutions and protective oxide films on the coatings repaired themselves over the corrosion potential. Hexagonal‐BN is not only a limiting factor in the corrosion of the FeB based coatings. The corrosion morphologies of the coatings are strictly dependent on pores and micro‐cracks in the coating. Practical implications – The iron‐based borides act as solid lubricants and have a positive influence on tribological properties such as hardness, friction and corrosion of the coating. Originality/value – Knowledge of the effects of FeB on the corrosion behaviour of thermal spray coatings is still incomplete and this is the most important obstacle to the widespread use of the coatings in engineering applications. The paper reports electrochemical test results of the coatings and discusses the morphologic effects of h‐BN on the corrosion behaviour. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

FeB and FeB/h‐BN based anti‐corrosive composite coatings for aluminium alloys

Anti-Corrosion Methods and Materials, Volume 59 (5): 9 – Sep 8, 2012

Loading next page...
 
/lp/emerald-publishing/feb-and-feb-h-bn-based-anti-corrosive-composite-coatings-for-aluminium-3oMO0L0nWY
Publisher
Emerald Publishing
Copyright
Copyright © 2012 Emerald Group Publishing Limited. All rights reserved.
ISSN
0003-5599
D.O.I.
10.1108/00035591211265659
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to investigate the corrosion behaviour of ferroboron (FeB) and FeB/h‐BN (hexagonal boron nitride) coatings deposited onto A383 substrates by atmospheric plasma spraying. Design/methodology/approach – Potentiodynamic scanning (PDS) and electrochemical impedance spectroscopy (EIS) were used to evaluate the corrosion susceptibilities of the composite coatings. Microstructural characterizations were carried out by using scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS). Findings – It was observed that the coatings resisted localized corrosion in NaCl solutions and protective oxide films on the coatings repaired themselves over the corrosion potential. Hexagonal‐BN is not only a limiting factor in the corrosion of the FeB based coatings. The corrosion morphologies of the coatings are strictly dependent on pores and micro‐cracks in the coating. Practical implications – The iron‐based borides act as solid lubricants and have a positive influence on tribological properties such as hardness, friction and corrosion of the coating. Originality/value – Knowledge of the effects of FeB on the corrosion behaviour of thermal spray coatings is still incomplete and this is the most important obstacle to the widespread use of the coatings in engineering applications. The paper reports electrochemical test results of the coatings and discusses the morphologic effects of h‐BN on the corrosion behaviour.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Sep 8, 2012

Keywords: Aluminium; Alloys; Corrosion resistance; Coatings; Composite coatings; FeB; Passivity

References

  • Plasma transfer arc boriding of a low carbon steel: microstructure and wear properties
    Bourithis, L.; Papaefthymiou, S.; Papadimitriou, G.D.
  • Wear behaviour of iron boride coatings produced by VPS technique on carbon steels
    Galvanetto, E.; Borgioli, F.; Bacci, T.; Pradelli, G.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off