The Corrosion Inhibition Effect of Triazinedithiol Inhibitors for Aluminum Alloy in a 1 M HCl Solution

Abstract

Abstract:Two environmental friendly triazinedithiol inhibitors 6-diallylamino-1,3,5-triazine-2,4-dithiol monosodium (DAN) and 6-dibutylamino-1,3,5-triazine-2,4-dithiol monosodium (DBN) were synthesized and their corrosion inhibition for aluminum alloy in a 1 M HCl solution was studied using weight loss methods, electrochemical measurements, and scanning electron microscopy (SEM) techniques. The inhibition efficiency of both DAN and DBN improved with increases in inhibitor concentration but decreased with increases in temperature. Results from potentiodynamic polarization and EIS showed that the corrosion inhibition efficiency of DAN and DBN was excellent. The adsorption of inhibitors on the aluminum alloy surface followed Langmuir adsorption isotherms. Morphology observation revealed that the aluminum alloy was greatly protected by these triazinedithiol inhibitors. Further, density functional theory (DFT) was used to investigate the relationships between molecular structural and inhibition efficiency.

Experimental and theoretical insights into the corrosion inhibition activity of novel Schiff bases for aluminum alloy in acidic medium

“…The OCP values for the UB inhibitor solution transfer towards a more negative potential as compared to the blank solution which may be ascribed to the formation of a protective lm on the surface of the electrode. 44 This was inferred from the results shown in Fig. 1, which shows that OCP values of the aluminum corrosion in the presence of Schiff base UB mostly are more negative 45 than those of the blank.…”

Synthesis and Evaluation of Corrosion Inhibiting Activity of New Molecular Hybrids Containing the Morpholine, 1,4-Naphthoquinone, 7-Chloroquinoline and 1,3,5-Triazine Cores

“…Compounds containing a quinoline core also showed anticorrosive activity in iron and steel in acidic solution [31] [32] [33]. Similarly, triazine derivatives presented anticorrosive activity in aluminum and steel in acidic me-Advances in Chemical Engineering and Science dium [34] [35] [36] [37]. In addition, compounds containing the morpholine group exhibited anticorrosive activity, mainly in steel, in acidic media [38] [39].…”

Fabrication of Superhydrophobic AA5052 Aluminum Alloy Surface with Improved Corrosion Resistance and Self Cleaning Property

“…Triazinedithiol compounds, as a kind of environmentally friendly compounds, have attracted many researchers' attention during the past decade for their good properties such as high reactive, low cost, good adhesion and dielectric property on a variety of metal category [23][24][25]. Specifically, the triazinedithiol polymeric nanofilm exhibits excellent hydrophobicity and corrosion resistance in previous studies [26].…”