Adsorption and protective behavior of BTAH on the initial atmospheric corrosion process of copper under thin film of chloride solutions

Abstract

The initial corrosion process of copper and the corrosion resistance mechanism of Benzotriazole under chloride-containing thin electrolyte layer (TEL) was investigated. After theoretical calculation and experimental characterization, the forming process of [Cu(I)BTA]n film was chemically adsorbed on copper surface by Cu-N bond tightly; corrosion rate increased as TEL thickness decreased. Whilst, energy distribution plot of electrochemical noise provided the validity of corrosion type, and the purported corrosion energy (Ec) deduced from electrochemical noise was approximately proportion to corrosion rate (1/Rct) with and without the anticorrosion film, which denoted the feasibility to determine corrosion rate by nondestructive on-line monitoring electrochemical noise progress.

Green-based corrosion protection for mild steel in 3.5 % NaCl and distilled water medias: Jatropha curcas and Roselle extracts

“…The chloride ions assisted the adsorption process of active chemical compounds present in the plant extracts on the samples' surfaces by creating bridges between the sample surface and active chemical compounds [29]. Similar results were reported by Ridhwan et al [30] in which the addition of KCl improved performances of plant-based inhibitors.…”

Enhanced Anticorrosion Performance and Mass Preparation of Magnetic Metal-Doped Zinc Oxide Nano Solid Solutions

“…The match degree of magnetization and impedance anastomosed the EIS and polarization results (Figure S3 and Table S3, Supporting Information). 59,60 With the passage of time, the relationship between magnetization and impedance did not change. It reveals that the presence of magnetization could fluctuate the electron flow and retard the charge transfer arising from the corrosion process and further decline the charge transfer rate, which are beneficial for the excellent anticorrosive performance of pigment in the paint industry.…”

Screening the Surface Structure-Dependent Action of a Benzotriazole Derivative on Copper Electrochemistry in a Triple-Phase Nanoscale Environment

“…BTAH adsorption results in the formation of supramolecular structures at the Cu surface, which effectively act as a physical barrier to the surrounding environment. 8 − 10 Since its inception, many BTAH derivatives have been synthesized to adapt its use to different conditions, 11 − 13 for example, oil-soluble derivatives are used in the oil and automotive industries to minimize the aforementioned Cu degradation. 14 …”

“…The action of BTAH in suppressing and controlling Cu degradation is mainly due its strong interaction with the metal surface, predominantly through the nitrogen atoms in the heterocyclic ring (especially when it is in the deprotonated form, BTA – ), as well as the π electrons of the aromatic ring (Figure a). BTAH adsorption results in the formation of supramolecular structures at the Cu surface, which effectively act as a physical barrier to the surrounding environment. − Since its inception, many BTAH derivatives have been synthesized to adapt its use to different conditions, − for example, oil-soluble derivatives are used in the oil and automotive industries to minimize the aforementioned Cu degradation …”