Publication detail

Effect of Heat Treatment on the Corrosion and Mechanical Properties of Electrolytical Composite Ni-B Coatings

ORIŇÁKOVÁ, R. ORIŇÁK, A. KUPKOVÁ, M. SABALOVÁ, M. STRAKOVÁ FEDORKOVÁ, A. KABÁTOVÁ, M. KAĽAVSKÝ, F. SEDLAŘÍKOVÁ, M.

Original Title

Effect of Heat Treatment on the Corrosion and Mechanical Properties of Electrolytical Composite Ni-B Coatings

Type

journal article in Web of Science

Language

English

Original Abstract

Electrodeposition of composite coatings with nickel matrix and boron micro-particles was investigated. Nickel - boron layers were deposited potentiodynamically at 12.5 mV/s on cylindrical samples prepared from iron powder in a stirred heterogeneous system formed by a Watts type nickel plating bath and dispersed boron micro-particles. The effect of boron powder amount in plating bath and heat treatment on the corrosion resistance and hardness of the composite Ni-B coatings was evaluated. Corrosion properties of coated cylindrical iron samples were investigated in 1 mol dm-3 NaCl solution using potentiodynamic polarization method. The structure of coating layers was established using scanning electron microscopy (SEM) and light optical microscopy (LOM). The content of incorporated boron particles increased with the boron amount in plating bath. Homogeneous distribution of boron particles in deposited coating layer was observed for both as-deposited samples and samples heat treated at 400 °C. Boron particles were not observed on the surface of the deposits heated at higher temperatures. Generally, addition of boron micro-particles to the nickel matrix as well as the heat treatment deteriorated the corrosion resistance of iron samples coated with composite Ni-B films. The dependence of the corrosion properties of composite layers on boron particle loading was not proved. The decrease of microhardness on the surface but increase of microhardness on the cross- section of composite Ni-B coating layer due to the heat treatment was observed.

Keywords

electrolytic deposition, composite Ni-B coating, corrosion, anodic polarization, microhardness

Authors

ORIŇÁKOVÁ, R.; ORIŇÁK, A.; KUPKOVÁ, M.; SABALOVÁ, M.; STRAKOVÁ FEDORKOVÁ, A.; KABÁTOVÁ, M.; KAĽAVSKÝ, F.; SEDLAŘÍKOVÁ, M.

RIV year

2014

Released

1. 8. 2014

Publisher

ESG

ISBN

1452-3981

Periodical

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

Year of study

9

Number

8

State

Republic of Serbia

Pages from

4268

Pages to

4286

Pages count

19

URL

http://www.electrochemsci.org/papers/vol9/90804268.pdf

Full text in the Digital Library

http://hdl.handle.net/11012/201441

BibTex

@article{BUT107656,
  author="Renáta {Oriňáková} and Andrej {Oriňák} and Miriam {Kupková} and Mária {Sabalová} and Andrea {Straková Fedorková} and Margita {Kabátová} and František {Kaľavský} and Marie {Sedlaříková}",
  title="Effect of Heat Treatment on the Corrosion and Mechanical Properties of Electrolytical Composite Ni-B Coatings",
  journal="INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE",
  year="2014",
  volume="9",
  number="8",
  pages="4268--4286",
  issn="1452-3981",
  url="http://www.electrochemsci.org/papers/vol9/90804268.pdf"
}