Experimental and theoretical investigations on the inhibition efficiency of N-(2,4-dihydroxytolueneylidene)-4-methylpyridin-2-amine for the corrosion of mild steel in hydrochloric acid
Yasir Muhi Abdulsahib, A Eltmimi, Sabah Sahib Al-Habeeb, Mahdi M. Hanoon, Ahmed A. Al‐Amiery, Tyser Allami, Abdul Amir H. Kadhum, M Christov, A Popova, P Okafor, X Liu, Y Zheng, L Herrag, B Hammouti, S Elkadiri, A Aounitia, C Jamab, H Vezinc, F Bentissd, S Cheng, S Chen, T Liu, X Chang, Y Yin, L Chauhan, G Gunasekaran, E Bayol, T Grten, A Grten, M Erbil, P Okafor, Y Zheng, E Yousif, Y Win, A Al-Hamadani, A Al-Amiery, A Kadhum, A Mohamad, H Obayes, G Alwan, A Mj, A Alobaidy, A Al-Amiery, A Kadhum, Mohamad, A Alobaidy, A Kadhum, S Al-Baghdadi, A Al-Amiery, A Kadhum, E Yousif, T Salman, D Zinad, S Jaber, M Shayaa, A Mahal, M Takriff, A Al-Amiery, A Al-Amiery, Y Al-Majedy, A Kadhum, A Mohamad, A Al-Amiery, A Kadhum, A Mohamad, S Junaedi, A Kadhim, E Salim, S Fayadh, A Al-Amiery, A Kadhum, A Mohamad, H Habeeb, H Luaibi, T Abdullah, R Dakhil, A Kadhum, A Al-Amiery, S Al-Taweel, K Al-Janabi, H Luaibi, A Al-Amiery, T Gaaz, D Mahmood, A Al-Okbi, M Hanon, K Rida, A Alkaim, A Al-Amiery, A Kadhum, A Kadhum, H Obayes, A Al-Amiery, G Alwan, T Abdullah, A Kadhum, A Mohamad, D Jamil, A Al-Okbi, S Al-Baghdadi
Abstract
Low carbon steel is an important construction material utilized in various industries mostly for its outstanding mechanical characteristics and its rather low cost compared to other materials. The current investigation studies the ability of N-(2,4-dihydroxytolueneylidene)-4methylpyridin-2-amine (N-MDA), a Schiff base, on low-carbon steel corrosion inhibition in 1 M HCl environment utilizing weight loss techniques under the effect of different methodological restrictions. Experimental findings showed that (N-MDA) is an efficient inhibitor and inhibitive efficacy increased with increasing N-MDA concentration; reaching the highest rate of 93.7% at a N-MDA concentration of 0.0005 M. The effect of temperature of N-(2,4-dihydroxytolueneylidene)-4-methylpyridin-2-amine on the corrosion of low carbon steel in 1 M HCl solution was also investigated by weight loss experiments at temperatures ranging from 303 to 333 K. The adsorption of the N-MDA molecules on the low-carbon steel surface followed the Langmuir isotherm model with the adsorption free energy ( 0 ads G