What question did this study set out to answer?

The research aims to evaluate the effectiveness of TiO2 nanoparticles as corrosion inhibitors for carbon steel.

March 2, 2026Open Access

TiO2 nanoparticles as corrosion inhibitors on carbon steel

Q: What does this research mean for the field?

TiO2 nanoparticles reduce the corrosion rate of carbon steel from 0.20 mm/year to 0.14 mm/year at room temperature and from 1.82 mm/year to 1.20 mm/year at 90 °C. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

BPBrayan Leonardo Pérez-EscobarCentro de Estudios Universitarios Adolfo López Mateos LHLuis Héctor Hernández-GómezCentro de Estudios Universitarios Adolfo López Mateos AAAlejandra Armenta-MolinaCentro de Estudios Universitarios Adolfo López Mateos

Key Points

The research aims to evaluate the effectiveness of TiO2 nanoparticles as corrosion inhibitors for carbon steel.
Thin films of TiO2 nanoparticles were synthesized using the sol-gel technique.
Carbon steel samples from an oil storage tank were coated with TiO2.
Surface evaluation was conducted using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS).
Corrosion rate was assessed using linear polarization in a 3.5% NaCl solution at varying temperatures.
The corrosion rate decreased significantly from 0.20 mm/year to 0.14 mm/year at room temperature.
At 90 °C, the rate reduced from 1.82 mm/year to 1.20 mm/year.
TiO2 coating effectively enhances the lifetime and mechanical behavior of carbon steel.

Abstract

This paper describes the corrosion protection of carbon steel using thin films of TiO 2 nanoparticles (NPs). It increases its remaining lifetime and improves its mechanical behaviour. Samples of an oil storage tank were coated. The steel plates have ferrite and pearlite, as well as an agglomeration of cementite and graphite. NPs TiO 2 were synthesized using the Sol-Gel technique with a compact tetragonal structure. The samples were treated at 550 °C for one hour. The anatase phase of the TiO2 was detected. The surface of the samples was evaluated with SEM and EDS. There are no significant changes to the TiO 2 layer. The degradation rate of the coated carbon steel was assessed using linear polarization with a 3.5% NaCl corrosion solution. The corrosion rate was reduced from 0.20 mm/year to 0.14 mm/year at room temperature and from 1.82 mm/year to 1.20 mm/year at a critical operating temperature of 90 °C. The above demonstrates the effectiveness of the TiO2 coating in reducing the corrosion rate under normal operating conditions and high temperatures.

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