Effect of Si₃N₄ Reinforcement on the Wear and Surface Properties of Ni-Cr Electrodeposition Coatings

Year 2025, Volume: 4 Issue: 2, 45 - 54, 29.12.2025

Muhammed Fatih Geçkin , Alperen Yilmaz , Umut Kumlu , Ömer Hükümdar , Ali Keskin , M. Atakan Akar

https://doi.org/10.70395/cunas.1716722

Abstract

In order for copper parts, which are widely used in the industry, to exhibit better mechanical properties at low cost, electrodeposition is performed. In this context, the prominent nickel coatings are constantly being improved. The experiments carried out aimed to optimize the electrodeposition process by using reinforcement elements. Within the scope of our study, chromium, which attracts attention with its corrosion resistance and aesthetic appearance, was added to the structure of nickel coatings. In addition, Si3N4 ceramic particles, which have high thermal stability and high corrosion resistance, were added to the coating structure as the third phase reinforcement element. Coatings were carried out in a Watts type bath and abrasion test and surface roughness test were performed for the analysis of the samples. The test results showed that chromium added to the coating structure reduced the average friction coefficient from the value of 0.46 for pure nickel coatings to the value of 0.32 Si3N4 ceramic particles added to the coating structure together with chromium have a lower average friction coefficient than pure nickel coatings, while they have a higher average friction coefficient than Ni-Cr coatings. In addition, Si3N4 coatings added to the coating structure have an average wear rate of 3.2 times higher than Ni-Cr coatings.

Keywords

Electrodeposition , Composite , Nickel , Chromium , Silicon Nitride

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