Effects of powder size and metallic bonding layer on corrosion behaviour of plasma-sprayed Al2O3-13% TiO2 coated mild steel in fresh tropical seawater

N. H N Yusoff, Mariyam Jameelah Ghazali, M. C. Isa, A. R. Daud, Andanastuti Muchtar

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This study focuses on the effects of powder size and Ni-Al bonding layer on the electrochemical behaviour of plasma-sprayed Al2O3-13% TiO2 coating in fresh tropical seawater. The presence of the metallic bonding layer reduces the coating porosity and increases the surface roughness for both microparticle and nanoparticle coatings. The nanoparticle exhibits better corrosion rate of 1.9×10-6 mmpy compared to the microparticle coating, with a corrosion rate of 3.05×10-6 mmpy. However, the presence of the metallic bonding layer increases the corrosion rate for both micro and nanoparticle coatings. The corrosion mechanism for the coating with and without the metallic bonding layer is discussed in detail.

Original languageEnglish
Pages (from-to)2527-2533
Number of pages7
JournalCeramics International
Volume39
Issue number3
DOIs
Publication statusPublished - Apr 2013

Fingerprint

Seawater
Powders
Carbon steel
Corrosion
Plasmas
Coatings
Corrosion rate
Nanoparticles
Porosity
Surface roughness

Keywords

  • C. Corrosion
  • D. AlO
  • D. TiO
  • E. Structural applications

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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abstract = "This study focuses on the effects of powder size and Ni-Al bonding layer on the electrochemical behaviour of plasma-sprayed Al2O3-13{\%} TiO2 coating in fresh tropical seawater. The presence of the metallic bonding layer reduces the coating porosity and increases the surface roughness for both microparticle and nanoparticle coatings. The nanoparticle exhibits better corrosion rate of 1.9×10-6 mmpy compared to the microparticle coating, with a corrosion rate of 3.05×10-6 mmpy. However, the presence of the metallic bonding layer increases the corrosion rate for both micro and nanoparticle coatings. The corrosion mechanism for the coating with and without the metallic bonding layer is discussed in detail.",
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AU - Yusoff, N. H N

AU - Ghazali, Mariyam Jameelah

AU - Isa, M. C.

AU - Daud, A. R.

AU - Muchtar, Andanastuti

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N2 - This study focuses on the effects of powder size and Ni-Al bonding layer on the electrochemical behaviour of plasma-sprayed Al2O3-13% TiO2 coating in fresh tropical seawater. The presence of the metallic bonding layer reduces the coating porosity and increases the surface roughness for both microparticle and nanoparticle coatings. The nanoparticle exhibits better corrosion rate of 1.9×10-6 mmpy compared to the microparticle coating, with a corrosion rate of 3.05×10-6 mmpy. However, the presence of the metallic bonding layer increases the corrosion rate for both micro and nanoparticle coatings. The corrosion mechanism for the coating with and without the metallic bonding layer is discussed in detail.

AB - This study focuses on the effects of powder size and Ni-Al bonding layer on the electrochemical behaviour of plasma-sprayed Al2O3-13% TiO2 coating in fresh tropical seawater. The presence of the metallic bonding layer reduces the coating porosity and increases the surface roughness for both microparticle and nanoparticle coatings. The nanoparticle exhibits better corrosion rate of 1.9×10-6 mmpy compared to the microparticle coating, with a corrosion rate of 3.05×10-6 mmpy. However, the presence of the metallic bonding layer increases the corrosion rate for both micro and nanoparticle coatings. The corrosion mechanism for the coating with and without the metallic bonding layer is discussed in detail.

KW - C. Corrosion

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