Journal
CORROSION SCIENCE
Volume 184, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109376
Keywords
Carbon steel; Corrosion inhibition; EIS; Polarization; Temperature; Modelling
Funding
- Osmaniye Korkut Ata University Scientific Research Projects Unit [OKUBAP-2018-PT2-006]
- Scientific Research Project Fund of Sivas Cumhuriyet University (CUBAP) [RGD-020]
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DBB compound was synthesized and tested for preventing carbon steel corrosion in HCl at different temperatures. The inhibition efficiency increased with rising temperature and immersion time. Quantum chemical calculation was used to investigate the inhibition properties of DBB through predicting its interaction with metal in water.
2-((4-(dimethylamino) benzylidene)amino)benzenethiol (DBB) compound has been synthesized and tested for prevention of carbon steel corrosion in HCl at different temperatures. The research was carried out using electrochemical and microscopic techniques. Extended tests were conducted at 25 ?C while short-term tests were performed at 25 ?C and 55 ?C. The inhibition efficiency increased with increasing temperature and increasing immersion time. Temperature rise changed the inhibitor?s adsorption character. Activation parameters Ea, ?Ha* and ?Sa* were evaluated and discussed. Inhibition properties of DBB was investigated by quantum chemical calculation at wB97XD/6-311+G(d) level in water in a bid to predict DBB interaction with metal.
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