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Omeprazole (OL) as a green and efficient drug corrosion inhibitor was first investigated for the corrosion inhibition of Q235 carbon steel at 298, 308, and 318 K. Open circuit potential, Tafel, electrochemical impedance spectroscopy, and weight loss were used to evaluate the inhibition performance toward Q235 carbon steel in HCl medium. The results showed that OL exhibited excellent corrosion protection to carbon steel at different temperatures because of forming the compact and ordered OL adsorption film on Q235 surface. Especially, the inhibition efficiency increased to 96.11%, 95.12%, and 94.04% for 40‐mg/L OL in Tafel at 298, 308, and 318 K. Meanwhile, N–Fe and S–Fe bonds determined from X‐ray photoelectron spectroscopy revealed the multiple anchoring interactions between steel and OL with S and N atoms as the active sites. Density functional theory and molecular dynamics simulations showed the low energy gap ΔE and high adsorption energy values, besides the radial distribution function (RDF) indicating the strong chemical sorption of OL on Fe surface, which proved the superior corrosion inhibition efficiency of OL at a molecular or atomic level. [ABSTRACT FROM AUTHOR]

N‐containing heterocyclic compound (NCHC) was a common used green lubricant addictive due to their extreme pressure, antiwear and friction–reduction performance, and high thermal stability, and ethylene glycol (EG) as lubricant exhibited superior tribological performance, combining of NCHCs, which was a suitable candidate for further improving the tribosystems' tribological properties. Thus, in this work, the synergistic effect between EG and 2,4,6‐Tris(2‐pyridinyl)‐s‐triazine (TPT) on the tribological performance was explored coupling of the applied loads and rotational speed. The tribological tests showed that TPT played an important role in improving the tribological properties as sliding in TPT@EG; the formation of the tribofilms induced by tribochemical reaction was in charge of enhancing the tribosystem's lubrication performance sliding in TPT@EG. [ABSTRACT FROM AUTHOR]

Recently, most of the researchers focused on investigating the superlubricity of glycerol or glycerin/water solutions, yet all of them have no attempt to follow with performance about their lubricity under high load and fast rotational speed. In this article, the lubricity of glycerol was systematically investigated under 98 N and 1,450 rpm using a four‐ball wear machine. Interestingly, results showed that friction‐induced graphene layers were first discovered during sliding, meanwhile, friction‐induced graphene layers were closely related to the high flush temperature rise and catalysts. The synergy of graphene and glycerol elastohydrodynamic film on wear scar played an important role in obtaining low friction and wear‐less. [ABSTRACT FROM AUTHOR]