Optimization of Nano and Micro Filler Concentration in Epoxy Matrix for Better Mechanical and Anticorrosion Properties

Yosra M. Atteya, Dipika R. Barbadikar, Abdel Hamid I. Mourad, Mohamed F. Aly

Research output: Contribution to journalArticlepeer-review

Abstract

Coatings as a protection for mechanical equipment and components is one of the major targets for the scientific research. Coatings are widely applied in various applications such as turbine blades, valve bodies, pump housings. In this context, present study aims to improve the mechanical and physical properties of mechanical equipment/component surfaces to maximize their life-time using fillers/epoxy coatings. This can be achieved by optimizing the filler concentration in epoxy coatings to maximize the surface hydrophobicity, reduce the friction losses, and to increase abrasion and impact resistance. In this work, four different ceramic fillers, namely, nano silica, nano silicon carbide (SiC), nano zinc oxide (ZnO) and micro zinc oxide have been incorporated as fillers into epoxy polymeric matrix. 0.5, 1, 2, 3 wt pct of silica and nano ZnO were added to eight epoxy matrices, while 5, 10, 15, 20 wt pct of SiC and micro ZnO were added to another eight matrices. In total 16 formulas as a surface coating were used for both steel and glass substrates. The coated samples were left to cure in the ambient conditions for 7 days. Abrasion, hardness, impact, pull-off, surface tension and corrosion tests were performed. The results revealed that silica composites have the highest hydrophobicity. Increasing hydrophobicity of composites is a very good trend which shall contribute in solving degradation and corrosion problems, accordingly increasing life time of the mechanical parts. On the other hand, silicon carbide composite has the highest abrasion resistance and tensile strength.

Original languageEnglish
Pages (from-to)1448-1468
Number of pages21
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume55
Issue number5
DOIs
Publication statusPublished - May 2024

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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