2014/05/15 by M. Boudalia, Boudalia, M., A. Bellaouchou +13
Engineering · Materials Science · #Concrete Corrosion and Durability #Corrosion #Corrosion Behavior and Inhibition #DPP #EIS #Stainless steel #languimir isotherm.
paper · doi:10.48317/imist.prsm/morjchem-v2i2.1915
openalex publication_date 2014/05/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
The corrosion inhibition of stainless steel type 904 L SS with different concentrations (10-3-10-6 M) of 1,5-diallyl-1H-pyrazolo[3,4-d] pyrimidine (DPP) in acid solutions was investigated by potentiostatic polarization measurements. The effect of temperature (298-353°K) on corrosion parameters was examined. The open circuit potential values in the presence and absence of DPP noted before and after experiments indicated the formation of passive film on the surface of the samples. It was found that corrosion potential (Ecorr) increases with increasing DPP concentrations, while, corrosion current (icorr) decreases. Inhibition efficiency of DPP in 1M H3PO4 . The inhibitor functions through adsorption and follows languimir isotherm in the acid. Activation energy (Ea) for adsorption of DPP is calculated. The values of ΔGads decreased (attained more negative values) with increasing temperature.