Improving wear resistance of arc-sprayed AlMg coatings through sealing with nano-SiO2 modified epoxy

https://doi.org/10.31130/ud-jst.2026.24(3).036E

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Author

  • Le Duc Thanh
    Institute of Technology, Vietnam Defence Industry, Hanoi, Vietnam

Từ khóa:

Pray coating
sealing
nano SiO2
wear resistant
AlMg alloy

Tóm tắt

This research paper investigates the improvement of wear resistance of arc-sprayed AlMg alloy coatings through epoxy impregnation treatment containing silica (SiO₂) nanoparticles. Experimentally, the effect of different SiO₂ nanoparticle concentrations on the friction-wear properties of the coatings was examined. Wear behavior was evaluated by a ball-on-flat reciprocating abrasion test conducted on a UMT-3MT tribometer in accordance with ASTM G133. The effects of nano SiO₂ concentration on wear depth, friction coefficient, and wear rate were systematically analyzed. The results indicate that, epoxy sealing significantly enhances the wear resistance of AlMg coatings, while the incorporation of nano SiO₂ further improves this effect. An optimal nano SiO₂ content of 2 wt.% was identified, at which the coating exhibited the lowest wear depth, friction coefficient, and wear rate, demonstrating the effectiveness of nanosilica-modified epoxy sealing.

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Mar 31, 2026
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Cách trích dẫn
Thanh, L. D. “Improving Wear Resistance of Arc-Sprayed AlMg Coatings through Sealing With Nano-SiO2 Modified Epoxy”. Tạp Chí Khoa học Và Công nghệ Đại học Đà Nẵng, vol 24, số p.h 3, Tháng Ba 2026, tr 59-62, doi:10.31130/ud-jst.2026.24(3).036E.

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