Ahmed, Mohamed and Al-Timimi, Buthainah Ali and Al-Ali, Maha and H. Abdullah, Ghassan and Atiyaha, Safa Khalaf and Aljanabi, Ahmed Yaseen Ali and Mel, Maizirwan
(2025)
Chemical mechanical polishing as an alternative surface treatment technique for corrosion prevention of carbon steel in an acidic medium.
Scientific Reports, Nature Portfolio, 15 (15254).
pp. 1-11.
Abstract
Chemical mechanical polishing (CMP) has been a standard technique in semiconductor manufacturing
for achieving smooth surfaces. CMP utilizes a synergistic interplay of chemical and mechanical
interactions to achieve the desired removal rates, selectivity, and ultimately planarity with different
substrate materials. In this study, the impact of CMP on the surface properties of steel used in the
petroleum industry was examined, with a focus on its corrosion behavior posttreatment. Steel
samples were subjected to CMP with and without an oxidizer in a silica-based slurry, and their surface
characteristics were compared to those of samples polished mechanically. The addition of an oxidizer
to the slurry resulted in increased material removal rates and the formation of an oxide layer on the
surface; this phenomenon was not observed in CMP without an oxidizer. However, in mechanical
polishing, the action of silicon carbide grains on the steel surface led to an increase in the removal rate
but caused a decrease in its corrosion resistance. Compared with other treatments, the oxide layer
provided a good protective barrier against corrosion and improved the corrosion resistance of the steel
substrate. Based on the results from the practical study, an improvement in the corrosion resistance
properties was observed due to the chemical reaction of the oxidizer and the mechanical action of
the silica nanoparticles; these results showed the importance of chemical mechanical polishing as an
alternative method to reduce the corrosion of steel in acidic environments. Additionally, the effect of
hydrogen peroxide in a silica slurry with respect to the wettability, surface roughness, and hardness of
steel was examined using contact angle measurements, profilometry, scanning electron microscopy,
and microhardness tests.
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