List of Articles mehdi boroujerdnia

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  1 - Investigation of corrosion behaviour of X70 microaloy steel in acidic environment in one molar sulfuric acid solution in the presence of benzomidazole and methyl benzomidazole
  مهدی بروجردنیا Mohammad Yazdizadeh
  In the present study, two inhibitors, benzomidazole and methyl benzomidazole, were used to prevent corrosion of X70 micro-alloy steel in acidic environment in one molar of sulfuric acid. For this purpose, both inhibitors in different concentrations were investigated in More

  In the present study, two inhibitors, benzomidazole and methyl benzomidazole, were used to prevent corrosion of X70 micro-alloy steel in acidic environment in one molar of sulfuric acid. For this purpose, both inhibitors in different concentrations were investigated in order to find the best concentration, temperature and efficiency of weight loss tests, polarization and electrochemical impedance spectroscopy (EIS). The chemical composition of the sample was obtained by quantum test and the sample with dimensions of 100 × 50 × 10 mm was prepared in 20 pieces. Corrosion protection performance of inhibitors in 1 M sulfuric acid solution for weight loss test after 10 days of immersion and also in polarization and impedance tests using Auto Lab and Nova1.11 software were evaluated. . As a result, the best inhibitory efficiency of benzomidazole at a concentration of 600 ppm was equal to 37% and methyl benzomidazole at a concentration of 400 ppm equal to 30%, and in the combined state of these two solutions have the ability to increase corrosion efficiency up to 73%. As a result, both of these inhibitors showed practical ability to be used in industrial environments. Manuscript profile
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  2 - Investigation of Imidazole-Based corrosion inhibitor (PL-464) and corrosion behavior of X65 steel in Hydrochloric Acid
  mehdi borougerdnia Abbas Rajabi
       Hydrochloric acid is used in many industries. One of its applications is for boilers’ acid cleaning and well acidizing in the oil and gas industry. For the reduction of HCl corrosion on metal parts and installations, corrosion inhibitors a More

       Hydrochloric acid is used in many industries. One of its applications is for boilers’ acid cleaning and well acidizing in the oil and gas industry. For the reduction of HCl corrosion on metal parts and installations, corrosion inhibitors are used. In this research, the effect of Imidazole-Based corrosion inhibitor PL-464 and the corrosion behavior of X65 steel in Hydrochloric Acid (HCl) is considered. Polarization and Electrochemical Impedance Spectroscopy (EIS) experiments without and with 50, 100, and 150 ppm of PL-464 corrosion inhibitor at 25, 40, and 60ºc in hydrochloric acid solution are done. The result of these experiments showed that PL-464 inhibits corrosion by surface adsorption mechanisms. As temperature increases, corrosion potential moves toward positive amounts, and inhibition efficiency decreases. Also, corrosion decreases as inhibitor concentration is increased. Weight loss experiment at 25, 60ºc without and with 50, 150 ppm inhibitor is done, which corrosion weight loss percent is decreased as inhibitor concentration is increased. SEM and EDAX analysis showed that the steel surface in solution without inhibitor is damaged and Fe picks are shorter with respect to steel in solution with inhibitor. The results are attributed to the adsorption of inhibitors onto the steel surfaces which protects the steel surface from dissolving in acid solution. Manuscript profile
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  3 - Investigating the use of TiO2 and TiO2 microparticles waterproofed with nanotechnology in epoxy paint composite coatings on X52 steel
  Amir Kazemi Ahmad Menshi Mehdi Boroujerdnia
  In this research, two types of composite coatings based on epoxy paint reinforced by TiO2 nano and micro particles and TiO2 particles hydrophobicized by polysiloxane were prepared separately with concentrations of 1, 2, 3, 4 and 5% by weight to improve the properties of More

  In this research, two types of composite coatings based on epoxy paint reinforced by TiO2 nano and micro particles and TiO2 particles hydrophobicized by polysiloxane were prepared separately with concentrations of 1, 2, 3, 4 and 5% by weight to improve the properties of epoxy paint. and in order to investigate their behavior, they were applied on API 5L X52 steel and then their properties were investigated by conducting corrosion and wear tests. The thickness of the coatings was checked by a digital thickness gauge. The corrosion resistance behavior of the coatings was evaluated using the polarization method in 3.5% NaCl solution. The results of the corrosion test showed that by adding and increasing the concentration of reinforcing particles in the coatings, the corrosion resistance was improved, and also the composite coating of epoxy paint with 5% by weight of the hydrophobic TiO2 reinforcement showed better corrosion resistance than other samples. A scanning electron microscope (SEM) equipped with EDX was used to examine the morphological properties of the surface. In order to check the dispersion of micro particles in the field of coating, Map analysis was taken from the samples. The results obtained from Map analysis have shown the appropriate and uniform distribution of hydrophobic particles in the field of epoxy coating. The wear resistance of the coatings was performed by the bullet test machine on the disc. The results of the abrasion test showed that by adding and increasing the concentration of reinforcing particles in the coating, the abrasion resistance of the coating increased, but by comparing the epoxy composite samples, it was found that the hydrophobicity of the reinforcing particles had no effect on the abrasion resistance. Manuscript profile